So I'm interested in getting an MX or VX Revolution, or a G7, because I'm getting sick of how laggy and tight my MX610 feels. Although its fine for normal computing I work as a designer for deviantART and use Photoshop and especially Illustrator a lot. For those uses I find the MX610 too "sticky" and clunky for my taste. It's too difficult to move the cursor just a few pixels on the screen, and I notice a bit of lag. It's gotten to the point where when I open up PS or Ill I switch to my trusty old wired MX310. So I was wondering if any of these three mice would be good for me? I would prefer the MX or the G7 because they are larger and I'm not sure how the VX would fit in my hand, but I was leaning towards the VX because it's inexpensive and the G7 because it has 2200 DPI, while the MX and VX support only 800 DPI fixed. Any advice? Thanks.