Oh man, that knex desk looks awesome!
That said, not sure about the Logitech keyboard. I have the Windows version of it, and while the backlight is awesome, the battery life sucks (I get about a week, using the computer a lot, people could probably get 2-3 out of it though). It needs to be charged often enough I keep the cable hanging behind my screen, which kinda defeats the purpose of having a wireless keyboard. It's also not entirely metal, in fact it's a plastic structure with a sheet of aluminum on top for decoration, so it's not as solid as the Apple keyboard. The keys also have more travel, and are slightly softer than the Apple keyboard's keys are.
The hardest thing for me to get used to, was that it sits higher off the table than apple keyboards do. The front ledge is about twice as high off the table! Oh, and the shiny black plastic chips really easily, the back edge of mine is pretty rough.
Of course, there are the plusses: You never have to change the batteries, the keys actually feel pretty nice once you get used to them, and it supports 3 bluetooth devices, so you can use it with your desktop, your laptop, your phone, or whatever else on the fly by just hitting a button. I love to use mine to respond to texts when I'm at my desk, for example. Plus it's got a really nice backlight, if for nothing other than looking cool.
Still, I'd have to think long and hard before buying one over an apple bluetooth keyboard, especially since mac version (k811) costs way more than an apple keyboard does. Ouch!
So there ya go, anyway that knex table is pretty cool
