So far I am very satisfied with Dreamhost customer support. Filed in 3 support tickets within the week and fastest reply I got back was like within 15 minutes, slowest was within 24 hours (to me it is fast).
Site was down this evening, it took them 45 minutes to detect it and get it back up which to me is also considered fast.
They support custom DNS which I use it on WordPress Singapore to allow user to have the name http://YOUR_NAME.wordpress.sg.
I am getting the hang of the ability to host multiple websites =D
Thumbs up for Dreamhost.