I have a Unicomp Spacesaver that predates the Mac Version. It was my main keyboard for a while, but I've since switched to a Leopold Tenkeyless with Cherry MX B

I have a Unicomp Spacesaver that predates the Mac Version. It was my main keyboard for a while, but I've since switched to a Leopold Tenkeyless with Cherry MX Browns (and blank keycaps). While the Unicomp is nice (built like a tank and very clicky), it's quite loud, and also takes up a lot of desk space. The keys also take a lot of actuation force, and I found my fingers getting a bit sore after using it for a while. So I switched to a keyboard based on Cherry switches, which are also pretty good.