My friend has Trauma Center and the difficulty range is insane. The game really pushes you. I would not advise this game to someone who likes to fly through games or have little patience. This game is definitely HARD. I mean having to remove 4 tumors at the same time, thats just nuts.... o.o
I saw Elebits in the store and it looks really fun if you have 4 people, looks like a party game to me. I never have been into tony hawk games, so I really cant give you an accurate account, however it does look fun, I'll probably rent it.