Ubuntu, PC-BSD, What’s the Difference?
"In this article, I'll compare Ubuntu 7.04 with the upcoming release of PC-BSD 1.4. Having used both operating systems extensively, PC-BSD is the one I recommend and the one I install in desktop environments. If you've used Ubuntu before, but haven't tried PC-BSD, give it a try. The increase in responsiveness (i.e., everything seems to just run faster) and ease-of-use will surprise you."