A week ago I installed Ubuntu 13.04 on two of my computers and upgraded them to 13.10 using the upgrade manager. Both computers are running very nice! Boot time is fantastic, the open source ATI drivers are working better than ever, Plymouth is displaying perfectly, all multimedia is playing great and the refinements to Unity are very nice. I used the upgrade manager because I did not have any disks to do a clean install and I have read that most people have had good results with this method recently, my results were very good.
I found two very minor bugs in 13.10, the redundant restart entry and flv files were not displaying as pictures in the dash. These were extremely minor problems and no worse than I would find in any given distribution. The restart bug was sort of fixed by an update, sometimes it would appear in the menu and sometimes it would not. This was very easily remedied using dconf editor and probably a future update will fix this anyway. Either way this was a very minor thing and it was not hurting anything.
I have not found a solution for the way flv files displaying in the dash but mp4's display just fine. Flv's played just fine but I like the pictures displaying in the dash. I just re-downloaded my music and saved it as mp4's, they take up less space anyway so it all worked out fine in the end. Oddly, the other computer I upgraded already had mp3's on it and the ones I had played are still displaying properly. All things considered the bugs I found in 13.10 were very minor, easily worked around and for upgrading rather than a clean install both computers run extremely well.
I am really pleased to see Canonical more focused on quality rather than cutting edge. I prefer quality over anything and have always tried to go with distributions that make this their main focus. I have read about the plans for 14.04 and am really pleased with the focus on refinements and stability. Certainly I would expect to see cutting edge things appearing in the non LTS releases after 14.04 is released but it is good to know that the next LTS will be more or less a more refined version of a very good 13.10 release.
My congratulations to Canonical and all that contributed to it's development. Ubuntu has finally made it to my very short list of quality distributions that I would recommend using.