Unless you've got a couple thou to shell out for an Optimus Maximus, Logitech's diNovo Edge is about as slick a keyboard as anyone makes right now. We just cracked open the forthcoming diNovo Edge for Mac -- comparison shots are below, but the differences aren't too stunning.
Mac keys, and lots of 'em. Not just command, option/alt, etc., they've got the full complement, including Dashboard, Spaces, Quick Look, Front Row, iTunes (plus media controls), brightness up/down, and so on.
Unfortunately, unlike its PC counterpart, those media and shortcut buttons are not hidden behind the black mirror finish until lit up.
The keyboard font's changed to something a little thinner and larger. Definitely easier to see, but we'd still like a backlight.
There's no Bluetooth connect button anymore -- it's smart enough to automatically go into discoverable mode if it's not paired.
The Mac keyboard stack makes all those shortcuts configurable if you're using the function keys as, well, function keys.
Is it worth $159? We definitely like the way the keys feel (both in shape and in resistance / tactility) much more than Apple's latest boards. No qualms here if you're looking for a recommendation -- whether you've got a PC or a Mac, the Edge is a damn fine piece of kit for getting your type on.