How to choose? Is there anyplace to look that does side-by-side comparisons? Or do you just have to read a lot of reviews and hope that they make comparisons along the way?
One might assume that the Xbox version will look best, but will probably only be marginally better than GCN. But then, gameplay issues should outweigh minor graphical differences. For example, I read that the recent PS2 release of Wreckless, while graphically inferior, fixed a lot of annoying crap found in the initial Xbox release.
*Note: consciously avoiding considerations of fanboyism and haterism*