The IBZ/USA F1 is probably my favorite. I use it in the bridge of a Charvel Predator. It abslutely rips. It's thick and clear. It sounds great through good and bad amps. It splits/combines really well with singlecoils.
Ibanez had it stock in the
neck position of some 90's sabers. I don't know why they never used it as a
bridge pup.
I've yet to try it in the neck position. I think I will just buy another one before I take it out of my charvel.
BTW, the neck position of my predator has a virtual vintage 2.1 which I'm equally satisfied with.
THanks for listening to my pointless post.