I've got couple of AT101W - picked them up NIB for dirt cheap (I paid around $20 for a box of 10) and I gave them to family and friends. Some are happily using them to this day, some say it's too loud for them but all of them agree the feel is much better than any rubber dome. I didn't like it at first but after spending couple of hours on my father in law's computer with this keyboard attached I started to like it. It has very distinctive feel, 2 tactile bumps, very mechanical feel - like the very sophisticated machinery was under each key, it even makes very little click/clack when you listen to it, and it takes a while to learn not to bottom out, but typing on it can be very satisfying.
I say it's not the keyboard for everyone and I will never like it more than Model M but it's definitely worth trying.