>Optimus Maximus Ultra Configurable Keyboard with OLED Technology !!!
>http://www.teptronics.com/optimus.html
>
>...although the price is..ummm...well a tad expensive for a keyboard.

Yep, it's fancy and looks pretty cool -- but of course there are still the same concerns:
* The keys are "flat" (no curvature as seen from an end-on view -- I much prefer keyboard arrangement where top row and bottom row are "higher" than middle rows, which matches finger extents)
* Not sure about the tactile feedback. I liked the IBM Model M keyboard because it gave a tactile "click" which gave an indication when the key was pressed. Most keyboards today feel "mushy" and I often end up having to "bottom out" on keyboard to reliably make sure contact is established on keystroke.
* Durability. How long will such a keyboard last with someone who initially learned to type on a manual typewriter? How long will the keys last if I consistently "bottom out" the keys?

Out of curiosity I once bought one of those rubber keyboards. Gack! Okay, the keys are a bit "springier" than a lot of keyboards, but stll feel "mushy" on the stroke. The "grippy" feeling of the keytops are perhaps the worst bit -- it doesn't "feel" right. Of course one could go worse when it comes to tactile sensation -- like those "chiclet" keyboards (aka "calculator button") and flat membrane (e.g. keyboards on Sinclair ZX-80/81 and Atari 400 micros).

Ah yes... I'm about ready to toss the current keyboard I've got connected (it just happened to be available -- one of those "cheapie" keyboards come bundled with a computer case) out of frustration. No tactile feedback, it's flat and uncomfortable, and worst of all, it's missing about 8% of keystrokes in my normal typing. The only way that I can get it to accept 100% of keystrokes is to "bottom out"...