I love the feel of the keyboard on my new 12" Powerbook - it's not too soft like a lot of the iBooks, but not too stiff like a lot of desktop keyboards. The size of some of the keys annoys me slightly - this isn't a big deal, in my opinion. I wish the Delete and Return keys were slightly larger. I think Apple could simplify things a little bit if they didn't have the Open-Apple key and used Control for all the Open-Apple commands (like on Windows based computers). It feels awkward for me to type the command Open Apple-C for copying some text because they are closer than Control-C, which feels comfortable using my ring finger and index finger. There's a similar situation with Open Apple-X vs. Control-X. The space between the keys feels more natural with Control based commands. There's probably a reason Apple designed stuff that way, but I don't know what it is because I'm new to Macs. Overall, it's not a big deal, and I love the feel of my Powerbook's keyboard.
A lot of laptops in the Windows world, including Gateway, Compaq, Toshiba, and Sony, add a column of keys on the far right side of the keyboard which includes Page Up/Down, Home, End, and a few other keys. I can't stand this. Adding those keys in that far right position makes every other key slightly smaller, and makes typing feel uncomfortable and awkward. While using a friend's Compaq recently, I repeatedly hit the End key while trying to type Return, which really made typing frustrating. Bad keyboard construction in the Windows world almost immediately narrowed my search for a new computer to Apple, IBM, or Dell. Obviously, I made the right choice. 🙂
Alex