If you want to go retro ... I use a 1986-vintage genuine IBM AT (not PS/2) keyboard with an AT -> PS/2 -> USB conversion chain.
This puppy has real spring key-switches, and weighs enough to be classified as a lethal weapon. Still going strong after 22 years.
It predates Windows, so doesn't even have a Windows (CMD) key on it. But I have mapped ALT to CMD, CTL to Option, and Caps Lock to CTL (where God intended it to be).
No glare on this keyboard. There is an active used market for these, and they sell between $100 and $200.
!http://www.clickykeyboard.com/_ebay/2023276/2023276-001.jpg!
+IBM Model M: The Best Computer Keyboard Ever+
http://lowendmac.com/fishkin/07/0115.html