I agree with the most that you should get HD Budokai collection if you want to.
For Amazing Spiderman, I wouldn't buy it if I were you. The freeroam is back but there's little of it. Most of the times you're indoor using Batman : Arkham Asylum/City combat, which isn't dished out properly (IMO).
As for Ultimate Tenkaichi, I see how Z power leans towards it. I liked Tenkaichi the same as Budokai, but Ultimate Tenkaichi is a huge revamp of the original Tenkaichi series. And not in a good sense. There is alot of cinematics during gameplay which are flahsy and look good, but the actual gameplay is very shallow and repetitive. Alot of moves are based on kind of a rock, paper, scissors game; based on luck.
But personally, I'd pick up Naruto Ninja Storm 3.