I've been a regular customer at BLAZINGFASTHOST, purchasing domain names for well over 8 months now. Other than that, most of the time, the people they have working for them are professional and know what they are talking about. I've had questions that were answered and fixed within minutes, and complex problems worked on by the hosting admins personally resolved in only a couple days. They have live chat to help if you get stuck. and they seem to be available almost all the time.