Unity is horrible
Unity hides even more system tools and is even less "tweek-able" then xp or vista. I'll take lxde or kde with multiple desktops any day over unity. With multiple desktops, you can organize stuff. One can have documents that you are writing, another browsers, another with X-terminals and so on. You don't have to have 20 tabs cluttered at the bottom of the screen like windows does. Linux Mint is my current distribution on my laptop and I'm happy with it. I will probably put PC-BSD on my next desktop. Currently, I just have a laptop and a blackberry playbook bridged to my phone, also a blackberry. I don't even like gnome classic a whole lot even though mint has a good implementation of it. The start menu and taskbar model isn't broken, especially with multiple desktop environments and multiple desktops possible within the same session. Unity attempts to fix a problem that doesn't exist and makes it worse.