First you need to understand what you want to do. Virtual PC and
VMware Workstaion could be compared and Virtual Server and VMware
Server could be compared. What are you tring to do with virtualization
would be a better palce to start. If all you are looking for is a
check mark comparision most of the corporate IT publications have
publish articles for that kind of search. Try InfoWorld Network
Magazine, Information Weekly, eWeek etc