I've got a XFX 4870 in my Mac Pro - took 30 minutes to flash it, and it's been working perfectly ever since. I have honestly not had one single issue with it, so I really don't know where all this 'hassle' talk is coming from.
Also it has 2 DVI sockets, not one and a crappy Mini Display Connector. Admitedly, the second one is single link, but that's only what you'd get from the Apple one if you used an adaptor. It's also fine so long as you don't want to run 2 30" monitors. I run 2 x Dell 20" monitor, and both screens have worked brilliantly since installation.
My vote would be for a flashed 4870 - just make sure to get the XFX 'reference' model listed in the flashing tut - the other brands have had issues. I would also steer clear of the 4890, as compatibility with OSX is patchy at best (ie only one DVI working). The drivers in OSX 10.5.7 are for the 4870, not 4890, so issues are to be expected.
Also it has 2 DVI sockets, not one and a crappy Mini Display Connector. Admitedly, the second one is single link, but that's only what you'd get from the Apple one if you used an adaptor. It's also fine so long as you don't want to run 2 30" monitors. I run 2 x Dell 20" monitor, and both screens have worked brilliantly since installation.
My vote would be for a flashed 4870 - just make sure to get the XFX 'reference' model listed in the flashing tut - the other brands have had issues. I would also steer clear of the 4890, as compatibility with OSX is patchy at best (ie only one DVI working). The drivers in OSX 10.5.7 are for the 4870, not 4890, so issues are to be expected.