I haven't really messed with my video card settings for a while (school's in, so haven't been gaming), and I've been using the 84.21 nVidia drivers on my 7600GT for well over half a year now, and I was wondering whether upgrading to 9X.XX drivers would be worth it. 84.21 has proven to be incredibly stable for me; are any 9 series drivers stable for everyday use? Also, what are some of the notable feature improvements of upgrading?