What do you use an Ubuntu machine for? Games? MS Office? Surfing?
I tried it a couple of years ago and it was just too unique. No common software works on it as far as I know. Maybe I’m grossly ignorant on the subject, though.
I mainly use it for typing up lesson plans at work and web surfing at home. I can’t do any gaming on it, I have to use my desk top for that.
Ubuntu is linux so you can’t do a lot of games, you can use OpenOffice or LibreOffice like a charm, works great. Internet is easy and fast and no worries about a virus.