My husband has the Sony Ericsson s710a and I went for the 6682 since it had just been released that very day. I love it to death; the SE S710a is pretty nifty too.
Just started really looking for themes for both phones today and I have to say I'm feeling a bit jealous with his selection of free themes just at (phoneyworld.com). Animated and every menu has it's own dedicated backdrop. Talk about detail! Also, I'm noticing a lot of the wallpapers in the themes for 6680-82's aren't compensating for the Active Standby but I suppose that option isn't exactly used by everyone.
Anyone have any good places for free theme downloads? phoneyworld.com does have A LOT ... not that they're ALL that great. ;_