I love my Vita. To me it is like being able to own a TurboExpress back in 1991. Nothing else can touch the tech, the screen is nice, the game selection is great. I can't think of a knock against the Vita, really. I got mine during a GameStop $250 bundle special that added on a free game of my choice (Wipeout) and an offical Sony case. $20 for a 4GB card wasn't so bad. Looking at Slickdeals, I was able to pick up Mortal Kombat for $12 or so too. $200 of the trade credit was all thanks to a good timed 3ds trade in, the most over hyped handheld I've owned.
I also really like the remote desktop like feature of the Vita and PS3. It is fun being able to play any PS1 game, like Raiden Project or R-Types, on the Vita from the couch. Give me a good enough coffee shop or library connection and I'd bet I could play them away from home.
The Vita is the handheld gaming experience I've always wanted. Even if it gets discontinued tomorrow, I could see myself tracking down the software that's been released so far for a complete collection. I'm hoping to add Gravity Rush and Marvel vs. Capcom 3 sometime. I would love a port of Fallout 3 on the unit.