I don't know that I have a preference at the moment --have to see these next cards.
For years, I followed a 18th century English foreign policy "support the 2nd strongest power", as I like to support competition continuing to exist in the market. So when 3dfx was king I was buying NV (Riva) and when NV became king I bought ATI (Fury, Radeon, R8500).
Then gaming became a little less compelling for me (didn't see any games I just *had* to play), and I actually skipped the 9700/NV30 generation.
By the time I bought a new card last fall for my AGP setup (finally just had to play FarCry, D3, HL2), the choice seemed very clear for my budget --6800GT. I could have afforded top of the line, but I tend to stay price/performancy, and that was it with really good performance for AGP. If X800XL AGP had been available 6 months earlier, it might have turned out differently.
Certainly right now from a "company strength" position, it is very hard to pick a "second strongest power" right now --talk to me in a couple months.
I certainly have grown accustomed to, and really missed, ATI's MMC when I went back to NV.
And, yeah, I do think NV plays the game with sharper elbows, on average, over time --even if one totally excludes the NV30 fiasco. This is a matter of degree, I mean --I've never tried to fit ATI for a halo. And I've never been real comfortable with NV doing that.
I do get amused by "ATI didn't kill 3dfx" reasons tho --war neverending, amen.
And I do think that kind of thing plays into over-heating some of the rhetoric when things are at the marginal spot where folks have a choice of cranking down a notch to preserve peace and dialogue, or cranking up a notch over the line into vendetta. But then clearly the NV30 thing still has resonance for people too, and will for many years (particularly if they bought one!).
It would be interesting --tho I don't think it can ever be really established-- to try to figure out what percentage of "ATI fanbois" (or at least so pigeon-holed) are not really that at all; they are really "anti-NV fanbois", which isn't really quite the same thing, yet ATI and their community gets smeared with their tactics anyway. I suspect the # of "anti-ATI fanbois" in the NV community is much, much smaller and consists almost entirely of people who at one point in their gaming career had some really awful experience that they swore a mighty oath to never repeat (rotten drivers for the game they loved, broken card, RMA disaster, something of that nature).