Currently I am using Ubuntu 10.10 Maverick Meerkat RC.I  have also downloaded Fedora 14 Beta.So with limited hard disk capacity- I could use only one at a time,however,I tried them both before choosing the one I was going to install.I must say that the graphical rpm installer-packagekit is awful in fedora,I was dissapointed
that they have not made any changes to that.It isn't an expert's review-so don't mind if you beg to differ.Everything else was fine.Now,to Ubuntu-I think I like it-but there is a problem-it freezes every now and then complaining about something in mono.Nevertheless,I still like it.And most importantly I cured one nagging problem existing since the release 9.10-thanks to the Russian guy.I couldn't watch streaming videos in firefox,but I got it fixed.And it turned out to be really easy.