I'm using Rotosounds at the moment. I also like D'Addario Half Rounds.
Sometimes I"ll use Ernie Ball Super Slinkys in a pinch, because everyone sells them. They start off nice and bright but seem to go dead rather quickly. Good for last minute string changes before band auditions.
I used to like DR Strings Hi Beams, but found I was getting packs with a dead string far too often.