Is it a Mac Pro? Is it an HP Z8xx series? Lots of folks here consider you an edge case, but at the Mac Pro press meeting Apple held, they admitted that we are a small but vocal and vitally important group whose needs they intend to address. What are you rocking now, and what would you like to see in Mac Pro 7,1? My bread and butter today is system administration, but rapidly transitioning to a compute centric workflow. Currently pushing well beyond the limits of MP 6,1 expansion. What will it take to keep you here? Me? Pretty much Apple's version of a slick HP Z series with plenty of Thunderbolt AND PCIe expansion. Otherwise, Mac workstation and linux / freeBSD clusters. What's keeping you here?