my experience with Catalyst 10.10 and gnome shell:
With vertical refresh turned off in Catalyst Control Center and without the tearfree option it is on the first glance almost not bad. But context menu and popup messages are still tilted and almost unreadable
What is the typical release cycle for the driver in relation to getting up to speed with Fedora? I had issues with NVidia card hardware and have had much better fortune with ATI. I have returned to Fedora from a long run with Ubuntu, but just not digging Ubuntu's new direction. The Open Source drivers for ATI seem to love putting the fan on full speed and leaving it there.