Sapphire 4870 OR ASUS 8800GT Top OR Gigabyte GTX260?

try the 9800GT instead of the 8800GT.

4870 Easily
Mactronix

gainward also have good warranty , i got one due to it being the best price.

Depends on games too, but overall, 4870.

4870 hands down. The picture quality blows nvidia away.IMO
I upgraded from a XFX 8800GT XXX Alpha dog.

I have the Sapphire 4870 1gb. AWESOME

How did you come to that conclusion so easily?

i was also thinking the same, I suppose it cos its cheaper within like £10-20 than the GTX260

Its a matter of preference really, what looks good to one may be awful to another.
Most people i know prefer the way the stock set up of the ATI picture looks to the way an Nvidia card looks at default settings.
Equally another member may know a whole bunch of people who prefer Nvidia straight out of the box.
In older times X1xxx cards and 7 series Nvidia it was an issue that you needed to decide on as once you had the card there was little you could do about it.
These days however if you have the time and the inclination you can set up both camps cards to look near as the same as makes no difference.

Mactronix

If your saying this with just general specs..... as in pretty much any computer , I'd have to go with the 4870 as its better hardware. But the GTX260 is tempting because of the drivers. buy whatever is cheaper.