my personal opinion is buy both xbox360 n ps3... tryout and decide yrself. once you've make up yr mind sell one of it ! i don't think you'll lose much within 2-3 weeks old.

i got wii, ps3 n nds ~ seriously i know i can't play all of it at the same time plus i don't have so much time to spend except on weekend so i might giving up except one. time will tell.