The choice is more philosophical than deterministic, it depends on what you're going to do over this new infrastructure. All the answers are excellent and I have no all these aspects on my mind, but before choosing this or that what do you need SAN or HCI for? Who is going…

Very good question, but a world is opened when speaking about VDI. I think that flexibility and ready to use are the most importat aspects. All-Flash in not required but it depends on the answer you get to "what should VDI use for"?