I had host dime for about 5 months. Support was pretty good - at least they were fast. Their forums had a lot of information in it.
The reason I left was due to my server being downed by the other people on my box. At that point I decided that I needed ot ahve my own resources and went with a VPS solution. But I guess that is just a problem with shared hosting.
But whenever I emailed support about the server being down they would take care of the problem quickly.
If I had to go back to shared hosting I would seriously consider them again.