I would personally get the DVI. Maybe it doesn't matter for games but for reading text I think it makes a big difference (which is good for office work
DVI is good. When using an LCD with a regular VGA connection, the bits in VRAM in your video hardware are being converted to an analog signal that will be sent to your display and converted back to digital bits before pixels can actually be lit up. If the cabling is great and the timing of the A/D conversion hardware in your display is done well, that's not necessarily so bad.
So basicly with DVI, the bits that are in VRAM in your video hardware are what are being sent to the display. No D/A-D/A conversion, no worries about imprecise pixel timing between the display and the video hardware. Just bits. This is a nice bonus IMO.
To sum it up I like dvi better, but it is not needed if you dont really want to have it, though there is a diffrence.