i'd try the new ubuntu beta test, or for a proper desktop i have had great success using ubuntu 8.04 LTS. my leet trick is to right away after install go to software sources and disable all updates except for the security ones, the recommended and other updates all are bloat and really put stability at risk. so yeah, 8.04 out of the box is pretty much perfect imo.
i tried a whole bunch of distros, mint, fedora, centos, sabayon, backtrack, puppy, slackware, arch, and all i uninstalled after like 2 hours it's really way to repetitive, most are the same shit, somebody taking another distro and putting their name on it.
Ubuntu 8.04 man, everything else is a waste of time.