The Wii definitely has some good games out for it.
There is an insane amount of shovelware, but the good games are there also.

I have all 3 current gen systems and my favorite of the bunch is the 360.

If you take the best games on the 60 and line them up against the best for the other systems...IMHO the 360 is the winner.

To the OP, if you want a great game with a great story on your 360, try Mass Effect next.