Kinda depends on the guitar - if it's fairly bright like my Strat I'll use GHS Nickel Rockers, others I use GHS Boomers - various gauges depending on tuning. Standard tuning guitars get 10-46s, open tuning guitars get 10-52s. The GHS have been the most consistently great sounding strings from pack to pack year to year that I've ever used. And yep I've tried them all including the Pyramids, Thomastiks, and Snake Oils that cost 3-5x as much.
I like DRs on my acoustic, but rarely change them because I like the sound of old strings. I think the last time I changed them was close to 3-4 years ago, can't remember. I should start writing the date down on the pack or something. lol