Beauty is in the eye of the beholder.
I know many people who choose the curve for the fact that it's smaller and they feel that it is prettier. And some people choose the bold.
For me, edge ain't that bad either. I can live without 3g. Other's can't. The 8900 has a nicer camera as well. It depends on what features matter most to you.
I would choose the 8900 personally.