I've tried elementaryOS Luna for the first time, and I'm really deeply impressed by the speed, the responsibility and the user experience.
What I don't like:
- the Mac design ( MediterraneanNight1, Shiki-Brave2, please, we have enough Mac-clone skins already, and high contrast is just an eye-killer, seriously. )
- the position of the dock ( Plank ): before using Unity for a while, positioning the dock to the left seemed the worst idea ever - but suprisingly it is better with the wide screens and a lot faster to access.
The first problem may be handled in a while, the second is easier:
Search for the line
and change the number the way you want:
0 => left 1 => right 2 => top 3 => bottom
To position it top-left, right below the panel: Search for the line
Save the file, log out, log in back again.