For myself, I have been happy with Ubuntu and for others looking at expanding into an addition OS, I have been pushing Linux Mint. Well, after looking at PCLinuxOS from head to toe, I have some new insights that I would like to share.
Read it at Lockergnome
But on the flip side of this, the fact remains that Ubuntu has access (indirectly or otherwise) to more software and has a stronger community in the sense of user created add-ons like GetDeb.net, AutoMatix and Envy driver installer. I also feel Ubuntu has a clearer mission as to their release schedule, although I am very impressed with what I have seen in the latest release of PCLinuxOS.