I got my hands on both of these players at Digital Focus.
The Archos Gmini XS200 is a _tiny_ 20gb MP3 player, it felt almost comparable in size to an iPod mini, it’s that small. Nice big screen on it but the navigation seems a bit too simplified and minimalist.
The Archos Gmini 400 is also small but is a fully featured video player. 2.2″ screen 20gb hard drive etc etc. It hasa CF slot which is useful and I loved the TV out feature, picture quality was not as good as a DVD but was a lot better than regular TV.