Looking to purchase a workstation for using C2070 for Image registration

Sorry if this question has already been asked, but I am looking at getting a workstation for Image Registration. I have gotten the list of computer manufacturers from the nvidia website; however, I have never heard of had any reviews of these places. Does anyone have any experience with the following companies, or suggestions on which ones might be best to use?

Velocity Micro
Padova Technologies
InterPro Microsystems