Drivers are OK in my experience.
Yes there are problems within them if you look hard or are a developer -however even John Carmack has stated that ATI are getting 'there'. Drivers in current state are better than I had with the GF4 Ti4200 40.xx - better than the initial Radeon 8500 drivers (3286 I think). I have 2 small problems that could be driver or system problems. 1. Dungeon Seige in WinXP (fine in Win98SE), 2. TV Out resolution wont change any higher than 512*384 and has massive borders (admittedly I haven't tried too hard to fix this issue and it is something most people have no problems with).
There are problems with PSU's and mobo compatibility and at the end of the day whether or not they are ATI's fault (possible) or the mobo chipset manufacturers fault (more likely) due to their implementation of AGP spec being an early adopter you may suffer from some of these problems yourself.
I speak from experience. My word is not final, nor a seal of quality nor am I any authority.
I do blame the chipset manufacturers more willingly than anyone else and also the industry as a whole for not standardising PSU's in some way based on experience with blown PSU's and working for a large ISP in the UK and imcompatibility issues caused by flawed implementations of something as simple as USB (see
www.usbman.com)
Do I recommend you get one?
No - wait for the platform to mature, if you are not accustomed with dealing and troubleshooting tech problems or cannot return the card if you have any serious issues.
Yes if you want to have the fastest possible experience with the best image quality currently available and know that in a 6 months the fastest will be something else and you enjoy fixing tech problems should any arise.