I have a Scoutmaster, and think it's a great table. I would say the Scoutmaster and the Clearaudio performance are in the same league. I could be happy with either one. I do, however, like the fact that VPI is here in the states. And they provide great support for their products, as well as upgrade paths. My Scoutmaster is gradually being upgraded to the Reference Super Scoutmaster signature. I don't have the heavy platter or the JMW-10 tonearm, yet.
I would agree to some extent with Macdadtexas. Unless you can audition both in your home, it's hard to know which one you'll prefer. Even if a dealer had both tables, you would likely be hearing them through different electronics and speakers, which makes it tough to identify the tables' own sound. So, knowing that both are excellent tables, pick the one that looks like it should be in your home.
Or you can rely on the professional reviews. That can be a good thing, especially if you've liked other components that were recommended by a particular reviewer.