I play mostly HU SnG's mostly because they don't take up a lot of time. I played STT's for awhile and some 45's and some 90's, but I don't have the time anymore, so it's HU poker.
I'm having a great time and still adjusting to playing HU, but I am learning fast. I was a tight/aggressive player in STT, now I am learning to be LAG. Lots of raises from the button, lots of c-bets, lots of bluff bets if checked to me. Stuff like that. The suckouts are still there, but shoving with a pocket pair is holding up much better than PP's on full tables.