Fellowes Split Design Ergonomic Keyboard

• Split spacebar: Nice!
• Condensed arrow keys: bad! (try play pacman with it.)
• The Alt key is between Z and X. This means, your thumb needs to curl in a lot. On Microsoft Natural Keyboard and Microsoft Natural Ergonomic Keyboard 4000 the Alt is between X and C.

Majority of reviews on amazon are positive, many prefer it over Microsoft ones. The keys are the type that requires more pressure.

see also Best Ergonomic Keyboards, Xah Pick