For me my top two options are the matte back and the aluminum, so I voted for the matte backing. I currently have a phone with the matte backing and I love it, it is extremely easy to clean, doesn't seem dirty, doesn't show fingerprints, and doesn't scratch (easily). It seems like the perfect backing to the phone. I would however like to see the backing remain in the same curved style as the 3G is, I like the curvature of the 3G over the original. And as much as I prefer the original aluminum backing over the current glossy plastic, I did not like the 3/4 aluminum, 1/4 plastic look, and I assume that a full aluminum casing would interfere with the wireless signals. So for me these recent rumors are looking good.