I hated the GH when it debuted, but now I am loving the SGH, so much so that I'm getting a couple of 08 bags in SGH, and purchased a 07 black city with SGH too! I think the silver adds abit of rock chick look to the black, and can't wait till I get it!
I agree with previous posters that GH can look stunning on some colors, and a bit 'blah' in others.