back in my touring days i had an endorsement with DR, so that's what i used (9-42). they were good.

over the last few years i started using the cheapest crap available...mostly Ernie ball slinky (pink pack). i find that i can modify mfx pre-eq easy enough that the strings don't matter so much. as long as they feel easy to bend and stay in tune i'm good to go. lol.