Is Playstation Vita worth buying at launch?

[turtuls]

There are always defective units at launch for every console so I would suggest waiting a few months just so Sony can address the problems with the launch units. I've read that some users have had their systems freezing up a couple times and needing to perform hard resets on the system. Unless you need to play the latest Uncharted and a bunch of expensive ports, I would wait a while, but that's just me.