Looking to get a computer and I have questions about SLI. I want to run two or more high-end color-accurate monitors (haven't looked at specifics yet) plus a television mounted on the wall. I'm looking at two NVIDIA Quadro 4000 2GB PCIe cards OR, for close to the same price, I could get a single Quadro 5000 2.5GB card. They both come with one Dual Link DVI-I port and two DisplayPorts. First question, I assume it would be better to get the two 4000s SLI'd, correct? Second, it seems to me this would be a more-bang-for-the-buck solution than upgrading to the 5000, right? Third, and I have no clue about this, if two 4000s are SLI'd, do I still get the use of all the monitor ports (6 total)? Thanks!