One of my coworkers made the jump right when it became available to him and he likes it now. His first couple months had intermittent outages and slowdowns that he had to deal with them to get fixed, but all is good now. From what he tells me it sounds like growing pains were the cause and once the fiber in the neighborhood was totally done things were fine.
That's said I'm totally jumping on whoever brings fiber to me first. 20 up is fine, but increasing that by a few 100 would be much cooler.