Take a look at Red Hat’s latest version of their low profile VDI product, RHEV3. It provides both server and client VDI virtualization in a single product and is SAN friendly as it doesn’t replicate entire Windows images, just the delta difference from the golden image. The key component of it is not the all-you-can-eat license that provides everything including the kitchen sink, but the licensing.
If you look at the other vendors, they typically suck you in with a moderate cost product and then jam you with additional license fees for features that you don’t know you need until later. By that time it’s too late.
Not so with Red Hat. Not only is their product first rate, the Federal government agencies buy Red Hat by the container load, but it’s free when you buy the annual support license. So the real cost of ownership is a fraction of the other guys.
The other guys have first rate products, but Red Hat is hard to beat from a financial perspective.