I know there's a few Fifa 08 threads but I though I'd start a new for this.
Here is a list of the Fifa 08 factsheets for each platform. They are pretty informative and may tie up any questions you have about Fifa 08.
I really like the look of the features on the PS3/360 versions, but I guess I'll have to settle for the Wii version since that's the only console I have! Hopefully the controls will turn out to be awesome.