If they support MIDI, then they really should count.
As with many other people, I love the IBM Model M. At least in it's early incarnations. The key switches are brilliant, it is built like a tank (not a truck, you insensitive oaf), and I like the removable cable. I'm not sure why the cable should be a factor with me, but it is. I understand that there are a few better keyboards out there, but the Model M is by far the most readily available and the least expensive. I've found a few of them at thrifts for prices ranging from a buck fifty to five dollars.
If I were to be totally honest though, I'm fine with most new standalone keyboards. By new, I mean from the factory and not just of recent vintage. I think that the Model M really shines when it comes to endurance. I am a heavy keyboard users, and most keyboards just don't feel right after a few months of use. But I've had a few Model M's for a few years and they still feel great. And, since the ones that I have picked up are used, they may have endured through a couple of decades of heavy use.