Whatever...

Anyway, I'll put in my 2 cents:
I use VMware GSX on Windows and Linux as host OS as well as VMware workstation with multi-OS clients. I have found that since VMware was developed primarily on Linux, it runs much cleaner on a Linux host for both GSX and W/S. Therefore the security on Linux is far better than Windows it is a better host for VM's as far a security goes. Plus you don't have to pay for an extra license on the host.

I use VM's for development of my "attempt" at code (VMware workstation) but the company I work for uses VMware GSX server for running multipule divisions VM's (5) and clusters to redundant hardware. This has saved the company about 2/3 the cost by using VMware instead of buying extra hardware.

Since most servers and workstations use only on average 5-10% CPU utilization running idle type processes, its a waist of resources to have multipule machines running the same type applications. Even on the a PC most all hardware is barely utilized. As far as VMware being a "SERIOUS resource hog" you need extra RAM for a VM host but compare that buying an extra PC. Or try a dual/multi-boot a see how a pain that is...

I suggest Linux as a host because windows is a bit "cluncky"