I was gutted that my Hardy Heron died two weeks before the release of Lucid. I swapped over to Debian, but use the LTS elsewhere. I treat other Ubuntus as Betas.
I gave Ocelot a whirl this eve, and it's much better than my experience with the 10.04 netbook edition. The window management is more consistent. It feels more cohesive.
Anyway after some initial excitement, I broke it without much effort.
I'd pretty much written off Ubuntu, but think the next LTS could be pretty good - if they iron out all the bugs, and listen to the community.
I used to upgrade religiously every 6 months, from 7.10 to 10.04LTS. Been waiting for next LTS to upgrade work machines.