Marvel vs Capcom3 vs Ultimate Marvel vs Capcom 3

Meh I finnaly saved up enough money to get MVC3
Then they announce UMVC3
Idk what to choose
I was thinking about going to gamestop and buying MVC3 Then returning it to get UMVC3 would that work?

Since you've not got MVC3 yet, just wait for UMVC3 for phoenix wright