As a graphics designer you want to use Radeon 8500 with its dual monitor feature!
Period!
Hydravision software beats everything but the Matrox cards...... Nvidia wouldnt even compare...
Most of the people seem to fogot that to have a nice, fluent gameplay you need to have.... 25, 30 fps... everything above that is nice but it is also an overkill....
Stick to Radeon if you are a designer/gamer.....
It will give you very good 2D image quality, dual monitor support or dual LCD support, good TV/OUT output, and quite fast gaming performance, comparable with GF4 TI 4200......
Did I mention Hydravision... man if you are a designer you are going to love that program.... it is kind of tricky to setup but once everything is all set, man you can do so much with the desktop configuration... and it really works......
I just installed a Radeon 7500 clon in one of my customers's computer, and she is loving it... Now she has a Photoshop screen on one monitor, and all of the tools on the second one... you cant beat the comfort.....
Also ATI drivers are getting better and better during the last couple of months......