I've never tried a Curie point type soldering system, but I'm really itching to.
When I worked for LG electronics the production staff used Metcal stations and the engineering department had Weller systems.
I always assumed (Maybe wrongly) that the production staff only used Metcal stations as they could not adjust settings and it is a nice and simple system to use allround for production use with zero downtime. That was the only place that I worked that I have seen a Metcal station and never played with one - looking back I wish I had!
I currently have 2 types of system here, my main iron is a Hakko FX-951 with quite a selection of genuine tips (with extra grips) and to be fair I have very little to complain about, apart from the UI. It is a pita to change temps quickly, I find pulling the key out quicker than holding the (*) key. But apart from that it's been a fantastic system and has worked well for years.
The other station I have is a Weller WD1 with WSP81 iron, I have used a WSP81 iron for decades and had them on various different base units at home and almost every company I have worked for this has been the default iron. Again no complaints here, I've not had any issues with tips that some mention. Since I got the Hakko FX-951 a few years ago my WSP81 has always been used as a second station.
As mentioned I have quite a few tips for the Hakko of various shapes and the largest tip I have for that is a chisel T15-D24 all the other tips are either smaller or completely different shapes, but it covers maybe 80% of all my soldering use.
I use larger tips on the WSP81 for TO220's, soldering coax, bridge rectifiers, linear transformers, large components and anything that requires a bigger tip with a bit more heat.
I'm pretty happy with the above setups, but I am envious of those who have a "Curie Point" system and I'm really thinking about dipping my toes in to this. But it is VERY confusing what setup to get.
A MX system is out of the question at the moment, but I do have eBay searches saved for used equipment and if something comes up at the right price I may try that too.
I'm more interested in trying the 450kHz stations as they look like they have a lot to offer for the money, but the trouble is there are so many different types of handpiece and tip system I have no idea where to begin!
So far I've looked at the following:
Metcal PS-900 System - Cheap, not sure about the iron size.
Metcal MFR System - More expensive, but a minefield with handpiece and tip systems. I've exhausted my brain trying to research which type of tip system is right. SxV/SxP/SSC Tips - What's the best option?
Thermaltronics TMT-2000 System - Half the price of the Metcal MFR, if I bought this I'd buy the system that is compatible with the MFR type tips, I've worked out the K system is their own, i'd rather get one that works with Metcal and Thermaltronics. That narrows it down to the P (SxP?) or S type tips, the S type station is the cheapest and compatible with Metcal SSC tips.
Any help or experience with the above would be gratefully appreciated