the gt 640 is slightly worst than the 7750 but costs about $10 less (in US dollars), and the gtx 650 is a little better than the 7750 and cost $10 more.
and dont worry about consoles. they are 8 months off at least. and there wont be any games for them that will amaze. i mean hell, they will be weaker than my current computer, which the newest part in it is 6 months old. crysis 3 graphics is all im expecting from next gen consoles.