By instability of DVI I mean how easy it is for the cables to fall out (not an issue with HDMI, or at least as much of one.). And since my machine gets moved a lot (home to work and back for special occasions) screwing in the 8 screws while bending down to the machines storage location under the custom designed bench is a bit of a pain. Sorry for the confusion.
Not to mention that HDMI cables are a lot easier to route through specialized mounting holes than a series of DVI cables.