My teammate went to twitter, he is liking it there. But I would say Amazon as well as twitter are too big to generalize though I agree that sometimes culture is contagious thing. Your best bet is to get to know more about the team you expecting to join then be it internal transfer or at twitter.
I personally would. Nothing wrong with Amazon, but I've been happier since I moved to Twitter. Plenty of interesting work I've been able to lead, and they seem to train the managers to keep ICs happy because mine seems pretty invested in my growth.
Moved from Amazon to Twitter and loving it. Like someone said above, better comp, better culture, better responsibility, better managers and yes awesome food :). Every case is different though. Depends what's your current situation in Amazon is and what twitter is offering you.