I've now replaced my SuSE 10.2 install with vector and am very impressed. I have a home-built Pentium D 805/nVidia 7300GT system that has tried many variants of Ubuntu, Suse, and PCLos.
Linux Mint was the reigning champ. The latest release is quite terrific, with the only uneasy part being the nvidia install via Envy. As much as I enjoyed it, I liked the flow and feel of KDE over Gnome. Perhaps it had to do with the flickering of the screen when entering administrative tasks, or the lack of polish around the edges.
PCLinux 2007 had some tactile issues for me as well, even after trying five different installs with different discs. It was nice for the most part, but had some issues when copying large files. Add to that the WinXP theme and, well, some errors and crashes that openSuSE did not have.
Be on the lookout for Linux Mint's new KDE version, due any time now. Their last one was not too bad. It's just I'm enjoying Vector much more. I still cannot get over the speed!