Hi Nick,
Yes I did review both those resources prior to posting. Unfortunately they only provide high level information on the processor's support of Intel VT-x, Intel EPT and Intel VT-d. But if you look at the 2010 whitepaper I linked from Intel in 2010, the VT-x and VT-d have a specific list of features (e.g. FlexPriority, FlexMigration, etc.) that exist under each, and not all processor families support all of those features. Further, virtualization vendors like VMware may not support all the features available either. So depending on what you're looking for with hardware assisted virtualization, the challenge is finding up-to-date information to this level to help make a decision on a particular processor to include in your server hardware to match the planned workload that will placed on it.
Thanks for responding though! Let me know if you come across any more content. I will update this thread as well if/when I made headway.