I usually use D'Addario either phosphor bronze or the silk & steel on my acoustic. I've been running through strings and wearing them out very fast and so am trying a set of Elixir nanowebs right now. They sure sound nice.
On my electric, I haven't changed the strings in so long I don't even remember what I use. I bought a set of D'Addorio nickle strings for it earlier this week. Maybe I'll try some GHS strings soon. I've got a couple friends national touring bands and they use GHS on their basses and electrics. Figured I'd give it a try. One of them uses a cryogenic string. Not sure what the benefit is, but they sure do cost a lot.
Granted B chord amnesty by King of the Mutants (Long live the king).
If it comes from the heart and you add a few beers... it'll be awesome! - Mekidsmom
When in doubt ... hats. - B.G. Dude