I bought an Asus Core-2 Quad a couple of years ago, which is a lot of machine, and it has a PS/2 port for the keyboard. A PS/2 to USB converter is fine for a trackball, but not the best solution for a KeyWiz.
I don't know what your budget is, but
this i5 Quad looks like bargain, and it has both. There are still plenty of options out there with the full complement of ports. It's only the systems or manufacturers looking to save a buck, or don't have the space on the back panel, which exclude the legacy ports. If you're into building your own, it's also not difficult to find new motherboards with both.