I agree. The trick is not virtualization or even virtualization at near native performance -- no matter how difficult Microsoft products make it look. There are or will be many products that will do this in due time. If all you want is lowest cost of obtaining virtualization and only have 10-15 servers, perhaps that is all that matters. However, there are a number of other "must haves" -- such as VMotion. If I have to take a physical host down -- do I really want to effect 20-30 VMs as well. Xensource has an admirable 1.0 beta product. Just as the Microsoft videos for their upcoming hypervisor show promising technology, and shows leaps forward in their management capabilities. However for my recommendation, I can only recommend something that is shipping AND something that has the whole package. I certainly wouldn't have recommended pre 2.1.1 ESX, and that is about the layer both ESX competitors are at least for now.