I liked Ubuntu 10.04 and like and use Xubuntu 12.04 on an Acer netbook. I also have w7 on HP dv7t and on HP G71. I tried Unity, retreated to gnome-fallback. My Acer 1410 (64 bit, 4g ram; Intel 2 core - SU3500) seemed sluggish, so I retreated further - to Xubuntu, which runs well. I perused each of the following articles and many of the comments.
Will 90 percent of users always hate Windows 8?
Five ways to save Windows 8
The articles' authors present at least some points that seem relevant to Unity and to directions for Ubuntu and related but other desktops, relevant also to the range of folks who tried Unity and to their range of reactions.
Overall, I prefer Ubuntu albeit now Xubuntu for me.