Mark, Good Luck! I've a 10.1" tablet and a 7"tablet both running Android with slower GHZ processors and 1 GB storage - side by side they are faster than blazes than anything I've got Unity on. Even with faster processors and equal or more GB Unity just does not compare.
The Androids are up and on the internet while Unity is still trying to boot and paint the desktop. Oh, yes, Androids no problem at all with wireless WPA security while Ubuntu has delays, problems, and needs prodding on my netbook and notebook. Yes, launchpad bugs written, no action. Tell Android once about security & password and boom it's up on all subsequent boots. Not so with Ubuntu.
Now your milage may vary - oh, yes, the Android computers are comparable in price if not cheaper.
So I test Raring anyway, except when I want to get some work done then it's mint14.
Your preferences and results will vary....