with no aa i would go for the 2600 xt. you get hdmi and dx8. 1950 will get you better fps but not that much with no aa.
I love my ati card. I have the x1900xt. I do think the pic quality is better than on my nvidia 6-series card.
You ment Dx10 not 8, right?
And the 1950Pro is, to keep it simple, a whole lot better than any 2600 card.