You can get a ATI FirePro V4800, which is a workstation card as you already would be knowing, for about 200$.. So if your system would be used for only works then i'd recommend you getting that.
No worth it for his uses.
You're basing this on what? Wishes and Fanboism?If you wish to stick to desktop video cards then i'd recommend you getting a Nvidia video card as they work better with productivity apps compared to ATI cards..
Did you even bother to look at a recent review like the one I posted;
Yeah that GTX480 was working just great, especially at 0.9 fps. [:thegreatgrapeape:5]
Seriously stop living in the past, the reality is ATi gaming cards with standard drivers do better overall, but get nVidia workstation drivers in there and voila massive improvement and domination, but due to the specialized optimized drivers, which means if you get the desktop model, you're scr3wed.