EasyUbuntu is pretty good. When I installed Edgy on my dedicated machine, I had no problems with it. However, when I tried on my dual-boot machine, I got all kinds of errors. Fixed it, though, when I realized I had forgotten to go into Terminal and run the commands that the website said to run first. Duhr. Silly me. Never tried Automatix, though, how is it?
Automatix seems to be more straight foward to me. I've heard Easy Ubuntu doesn't work well with 7.04. I've never had a prob with Automatix. It is also the only way I could get Vitrtual Box installed.