Just got level 12. I prefer plat the games i play, and not play just for plat. That means stupidly long trophies such as GTA4, Killzone2, Resistance 2 etc.
I haven't aimed for tons of trophies yet, at the moment I have 259. Whenever I play any game, I usually get the platinum for it so I'll have 100% on all of my lists. That's far after I finish the game though.