Just when I thought keyboard layouts were about as geeky as it gets, I find that there is an entire enthusiast industry of specialty keyboards with "real" key switches, complete with clicks and actual tactile feedback. They tend to be up in the $100+ range, so they're not exactly cheap, but it does seem that many of these switches would be superior to the typical membrane/rubber dome keyboard. Not only in feel and sound, but strain in the wrists, since they do not require bottoming out every keystroke to register a hit. Sounds like a superior layout combined with good switches would go even further in terms of increasing comfort and ergonomics.
Unicomp's buckling spring-based keyboards seem to be a good "classic" choice at a relatively low price compared to most of what I've seen, as well as the Das Keyboard Model S Ultimate (I like the idea of the Cherry MX Blue switches). WASD Keyboards allows total customization with one of several switch types, also providing pre-configured Dvorak and Colemak layouts, and apparently is getting prepared to release a new version with a hardware switch that will allow changing between QWERTY, Dvorak and Colemak. Pretty cool!
Has anyone tried any of them for comparison? I'd probably buy a Unicomp or Das right now if I could... but I'll have to settle with the cheap Chinese-made, Dell-branded, rubber dome model I have for a while longer...