I use the Microsoft Comfort Curve Keyboard 2000. Cheap. I love this keyboard. It has a slight curve and almost flat keys. I tried the ergonomic split boards and I just couldn't get used to it. Now when going to work on iMacs, the keyboards drive me nuts because they use the regular keyboard.
i've been using this one lately too, like it very much, and you can't beat the price, 14 bucks!
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Gisele F. Dubson, RHIA
Mercury Medical Communications
"Deficits don't matter." Dick Cheney