Bill,I will report on speed, after I do some tests. Subjective impression is that they are all plenty fast. Otherwise, I find Parallels more stable, less complex, and a little better font-rendering (or it may be font control) with Tame. I am getting spurious messages from Parallels that I'm running out of disk space. The Parallels engineers are looking into it. By comparison, VPC resulted several times in the BSOD.