Street, no doubt. Oddly enough, I love to watch vert/tranny skaters a lot. It blows my mind how sick it is, and I hope to one day be able to not be shit at it. It's so much fun to skate transition, but I'm terribly awful at it.
I'll always be a street skater. Mostly because once you start street skating, almost everything becomes something you can fuck with. Just riding up on a little 3 stair and skating that for a few hours probably holds the best memories I have.
When i was younger i skated street. Im well in my 20s now and just get drunk and skate my buddies miniramp. Theres also a real nice underpass some kids around here decked out with quickcrete. So id have to lean towards vert and transitions now.