I have an OS X system that I use occasionally, but it's never been my primary desktop. Personally, I just prefer the way the Ubuntu desktop feels -- but everyo

I have an OS X system that I use occasionally, but it's never been my primary desktop. Personally, I just prefer the way the Ubuntu desktop feels -- but everyone's different. If you feel really at home with all the aspects of the Mac desktop, Ubuntu's not going to feel right -- which is how I feel on a Mac desktop. There's nothing wrong with the Mac desktop (other than that virtual desktops were a bit borked, last time I checked), it's just a question of what feels more comfortable to you. Also note that Linux gives you a wider choice of desktops, ranging from Gnome and KDE at the polished end to lightweight desktops like IceWM to funky tiling desktop managers like ratpoison and xmonad. But again, if what you really like is OS X's desktop, at best you can customize a desktop into a second-tier knockoff of it. The other consideration is what apps you care about, of course. My main apps are Emacs, Firefox, and a terminal window, and switching those is pretty easy. Personally, I like Open Office, InkScape, Gimp, and other Linux productivity apps just fine, and I greatly prefer Amarok to iTunes. However, everyone is different, so you may find something you can't live without from OS X. And if you're wedded to something like Cubase or Final Cut Pro, I doubt you'll be satisfied with the alternatives.