LBP Vita won't get me to purchase a Vita because I already own one. I purchased a Vita, Uncharted, Little Deviants(crap,) and Modnation Racers day one. Wipeout 2048 and Unit 13 later on. Also Mortal Kombat is the only third party game I own. I'm going to get Gravity Rush since it was a fun demo, but I'm waiting on another sale before I get it.
Most third party titles released on the Vita are kind of crap. The ones I'm interested in don't come out until later this year or next,, like Ragnarok Odyssey, Assassin's Creed Liberation, and Ys Celceta. But all the first party titles, with the exception of one, that I've played are all good games. Little Big Planet Vita isn't going to be an exception, because of how good it looks and going by LBP2, I'm sure it's going to be a great game.
Although we're talking about Vita, here, I think Chad Warden says it best. "Everybody knows is that PS3 make the best games." "What I'm really trying to say is that, Sony, Sony's the bomb."