How durable is the PS Vita? I have owned a PSP 1000 that had the analogue stick/nub drift to the right. How do the Vita's sticks compare? Are the buttons durable? I think the reason my PSP 1000's stick started to drift was because of playing LBP PSP on it too much. For that game, you are always walking to the right so the stick must have got stressed out. Will this happen on the Vita's sticks when played with similar games (LBP Vita for walking left, Killzone for always pushing the stick forward to walk...)? Thanks for any input.