It's almost a matter of your opinion, but here's how I'd order 'em...same as Bob94571.
1. eVGA
2. Asus
3. MSI
I know nothing about the other 3 manufacturers. If I had to take a wild guess:
4. Albatron
5. Gainward
6. Palit
The only one I've used thus far is eVGA. They've always been perfect for me. But I don't know any statistical differences, that's just my opinion up there. XFX should definitely be in that list too, if you have the option. I'd place them after eVGA, but once again, solely my opinion. And like I said, I know nothing of the last 3.