The Avant Prime by Creative Vision Technology. This one seems to have it all.. ALPS switches, hardware programmable remapping, and N key rollover. The only thing it’s missing is USB, but that can be fixed with a ps/2 to USB adapter. Going for $149, which is not much more than the Tactile Pro, and with it being programmable, I’m sure I can remap Alt and the Windows key to line up with option and command on the mac. This one might come in pretty high on the list..