There was similar thread some time back, my input was : JBC tips oxidize fast, be careful with this choice. This problem alone drives me mad, when i have long soldering sessions i just want to throw the damn thing out. Compare to JBC my old 15 year Weller still goes strong with the same tip which is always shiny and wet. JBC tips are junk compare to it. The JBC station firmware also has its own stupid quirks.
What Weller, and where are the tips made?
I ask, as I've a Weller setup myself, and have found that tips from Bosnia have ~30% failure rate vs. those that come from the US, Germany, or Japan (my stuff uses the NT & LT series; WMP & WSP80 irons respectively). Those with WES51/WESD51 stations have reported a similar experience with their tips (ET series made in Mexico).
What do you think?
From everything I've heard, Ersa is really good stuff.
It poses an excellent, if not the best value in the EU/UK based on both what I've seen and comments from members in this region of our little blue ball.
As per tips, I don't use a lot of conical shapes. Of what I do, it's far more commonly a bent conical which is excellent for soldering passive SMD components & pulling bridges from SMD IC's IME. I'm far more partial to chisels or hoof/bevel shapes (tinned face only), depending on the task at hand. I've others, such as spoon/gull wing for drag soldering, and bent chisels (i.e. useful for connectors, as they're more ergonomic to use vs. a regular chisel).
FWIW,
Hakko's Tip Selection Page may be of interest to you, as they show what the different shapes/profiles are used for.
It can hopefully help you save some funds on tip purchases for your needs.