Why low profile?
I find flat keyboards encourage me to rest my wrists near their base which increases wrist pain, rather than decreases it. I have a Cherry ML-84 and it's basically good for nothing. Wouldn't use it for anything except being my only compact PS2.
In opposition, the keyboard I feel the least pain using is the Model M, because it /requires/ me to pull my wrists up and use real muscles to type on the keyboard in order to actually depress any keys. And that keyboard has like the biggest curvature I've seen. Love how it positions those F1-12 keys, can hardly stand the regular flat layout since getting it.