I have 2 iMac DVs, and hence 2 hockey-puck mice (since replaced with APMs), and 2 of the compact keyboards.
These are the best! I'm going to miss them much when they die. They're small (duh), giving you extra mousing room when space is limited, like on a keyboard shelf. They're translucent, not transparent, so you can't see 3 years worth of accumulated crud inside. Ya gots yer integrated power switch. Super snug USB ports...
The APKs are nice though. I've liked pretty much every Apple keyboard that wasn't built into a laptop. The key tension is juuust right.
I impulse bought the new BT combo, so we'll see if they continue the winning keyboard streak.