Been using Ernie Ball Slinkys forever, infact since I started playing.
I mainly use 10's, but a few years back I started using 11's on some of the Gibsons, and 10's heavy bottom set for some strats
Guitars have for years been mostly Strats, Teles, ES-330, ES-335's, ES-345, LP's, LP jr, SG jr and Melody Maker.
I've tried many of the other usual suspects like D'addario, GHS's and many other along the way but always greatly preferred EB Slinkys.
Until I recently got a guitar that had D'addario NYXL strings on it - great sounding strings that lasts !
So I'm changing to the NYXL on a few of my main guitars and giving them a shot.
Time will tell but so far I really like them and I actually think I prefer them to the EBs.