realistically most things that are vibration resistant required will have potting which will kind of eliminate the requirement for nicked wire strands, especialy when combined with things like those 'clamping' gromets used to thread wires through a chassis (and prevent ingress of foreign material), and potting material.
My personal recommendation for good wire strippers:
http://www.homedepot.com/p/Klein-Tools-Wire-Stripper-Cutter-11046/100630720?AID=11210757&PID=4150373&cm_mmc=CJ-_-4150373-_-11210757&cj=truehttp://www.homedepot.com/p/Klein-Tools-6-1-4-in-Wire-Stripper-Cutter-11045/100630729?AID=11210757&PID=4150373&cm_mmc=CJ-_-4150373-_-11210757&cj=true20$ has you covered on good quality handtools, made by Klein, from 26 to 10 AWG. This is what I use. I splurge in other areas. Also, very comfortable.
Price is low because its mass produced for electricians. Also, lifetime warrenty, and you can pick it up at home depot in the electrical section.
**************other information on strippers*******
Precise is useful when your wire diameter is small in proportion to your insulation diameter (i.e. high voltage), otherwise the mechanical ability of the wire does not suffer too much from a 'nick'.
The more precisely machined the strippers are, the less chance of a nick you will have.. however it all depends on the insulation type of the wire. Teflon wire (which is real nice for chassis work), does not agree well with conventional wire strippers, which seem optimized for PVC insulation.
This can make a plan of using a 200 dollar wire stripper go down the crapper, if its optimized for different insulation then what you are using.
Serious production work does happen with 10$ klein tool wire strippers with no problems.
these are good
https://www.zoro.com/knipex-self-adj-wire-stripper-5-to-13-awg-12-50-200/i/G4481508/cg?gclid=CNO-zdDw-dQCFcKPswodkF8PwAhttps://www.eevblog.com/forum/chat/high-quality-wire-strippers-what-to-buy/25/various jaw sets/models exist for different ranges.
But what is more important, way more important then a wire stripper, is a cable stripper. Poor wire strip, unless you completely fuck it up, won't really effect you. However, a bad cable strip, means short circuits easy when you bend it. These are really important
https://www.zoro.com/greenlee-cable-stripper-8-awg-to-1250-kcmil-7-in-1903/i/G0924262/cg?gclid=CMi82_nx-dQCFdWIswodE9YI9gRealistically you would want cable ties and stuff on the wire close to the connection or solder point, which further reduces the risk of damage from a nicked wire. 
Buy kits of this stuff for a project/lab and the price goes up more then a quality pair of wire strippers (if you still want them, look for German brands off digikey.. they have really nice automated ones with different jaws. but prepare to pay a premium on it, like 250$ minimum. I recommend Wiha , weidmuller or Knippex..
********************************* other stuff on wiring thats way more important then strippers (other then cable strippers)********
I would personally spend that money on wire accessories like zip ties (you can get some nice stuff), nice terminations/crimpers (ferrules, etc), cable/wire holders (sticky type, screw type), cable glands/sealing grommets, silastic/silicone glue compound, potting material, correct usehttp://www.panduit.com/en/products-and-services/products/online-products-catalog of cabling (rather then individual wires), etc
Spend some time in the panduit catalog here:
http://www.panduit.com/en/products-and-services/products/online-products-catalogbefore you go out and spend a fortune on wire strippers. Obviously nice ones made out of carbide would be the best, so long the pivot joint kicks ass.. but if you are looking to make a robust mechanical system all those accessories added to your product/project will do way more for you for the price.
specifics
http://www.panduit.com/en/products-and-services/products/cable-and-wire-bundling/cable-tie-mounts-and-accessoriesvery important for good strain relief, and EMI performance (i.e. repeatability)
http://www.panduit.com/en/products-and-services/products/wire-routing-protection-and-insulation/heat-shrinkheat shrink is very important for good strain relief
http://www.panduit.com/en/products-and-services/products/wire-routing-protection-and-insulation/abrasion-protectionif you do good work with gromets and fasteners, the need for this stuff becomes less important (for internal work), however, something can always come loose, this gives your cable additional protection and life if something goes free and rubs on something etc.
*also, this keeps wires together mechanically. Advanced designs (often seen in old equipment) specify for hand looming, where a 'ribbon thread' like material is wrapped around the wire and tied off periodically. This allows for custom pressure to be applied to the cable, to hold it together. You can put point pressure between cables with 'hand loomed' , while maintaining flexibility, and leaving the ability to route, more so then is possible with just a cable protective jacket, which may kinda sorta keep cables together.. but if it applies excessive pressure the routing ability/flex ability of the cable will be effected" Also, you can vary pressure along a wire lenght, so you can decrease it at expected bends for instance.
http://www.panduit.com/en/products-and-services/products/wire-terminationquality crimps are important, along with quality crimp tools. this is a high point of failure right here, more so then anything else good crimps are great. For home use you might prefer to just solder stuff and use heat shrink etc.. having good crimping ability is expensive
http://www.panduit.com/en/products-and-services/products/cable-and-wire-bundlingnot the cheap ass zipties you get. they have some really nice stuff here
http://www.panduit.com/en/products-and-services/products/wire-routing-protection-and-insulation/wiring-ductpeople forget this stuff exists. It adds another layer of protection. You can use short pieces of it internally.
http://www.panduit.com/en/products-and-services/products/wire-routing-protection-and-insulation/abrasion-protection/grommet-edgingvery important too, specifically called it out. Line those sharp corners.
then these guys
https://en.wikipedia.org/wiki/Cable_glandDon't know of a good manufacturer. With glands there is a entire spectrum of shit (well with cable and wire too. I guess) that varries between 50 cents plastic common stuff to expensive (possibly in the hundred dollar range) stainless steel, water resistant, chemical rated, etc cable glands that are custom machined on many axis CNC machines.
There are other things related to wiring too that exist. It is not my specialty. Also, it is a very fun 'arts and craft' area of manufacturing (like deadbugging electrical or making custom enclosures (shop work)).
cable harness, chassis wiring, product wiring, etc is kind of its own engineering discipline. Larger companies that make alot of product may have their own EE that has broad knowledge of mechanical, thermal, electrical and chemical behavior of these things that does wiring design. He ends up needing to talk to everyone. It gets complicated because of things like thermal derating for wire bundles, etc.