Hi
After reading a few reports about DVI vs analog it seems modern set ups have little to gain (if anything) from DVI these days. Although you would presume DVI to be superior (due to its all digital interface, not digital>analog>digital) it no longer holds true on some systems, I think it all boils down to the hardware in question and of course the human eye. DVI (in theory) should give better colour definitation and a more 'vibrant' sharper picture. If you have the DVI option use it anyway, as it will not be worse than analog but at least equal and maybe slightly better (hopefully).