You are saying it yourself, is about talking about your experience with it. Confronting with the negativity won't convince anyone. But showing what it has and what is your experience with it may make a difference.
So, this is a valid idea in your opinion then? ->
Maybe someone should write a "I love my Vita, here are the reasons why I think it's worth getting" thread with a clear, concise and awesome OP. After that we all fall in and fight back the zombie, Vita eating horde.
Thats a nice idea. Actually, (I did that for an earlier thread) you could ask a mod to sanction this thread beforehand,banning any trolling when you declare that in the OP.