Elementary is really really nice. I used beta 2 for a month at work on my Linux machine since I didn't really like Gnome/Unity/XFCE/KDE. Elementary is brilliantly made, it looks great, is fast, and multitasking is a breeze. Once you know the keyboard shortcuts for workspaces and set yourself a few mouse hot corners you just fly through it.
If I was to switch to Linux it'd be to Elementary. Whenever I'll have to use Linux again for work or school it'll be Elementary too. You basically get the best of two worlds: the extreme versatility of Linux with the best looks and multitasking mechanics from all other operating systems combined.
If I didn't need Lightroom I'd probably switch from Windows 7 to Elementary permanently, everything else simply works in Linux nowadays (even Office 2010 works great through Wine!).