I guess only the pissed off people are posting...
I"ve had DH for well over a year with no problems that I can complain about. Maybe some feature complaints, but that's not what this thread is concerned with.
My web server is gotcha, mail is on sack.
MySQL is on a handful, but my most active databasses are on azrael and krakatoa.
Ofcourse I'd have higher performance with a dedicated server, but I've never experienced shared hosting as good as this has been. (I can remember only one outage when a massive DOS attack took down atleast one of thier main routers.)