This hosting company is superb. After sometime with ReliableSite I can absolutely say that I have never had support like this at any of the other major hosting companies I have worked with. They truly go above and beyond.
Price wise, I could not find what I am getting anywhere else, plus they never oversell, or charge you for going over allowances. Who does that?!
I have 20 domains with them and still growing...
Honestly, there are some features, like having to contact support to increase mailbox sizes that are a tad inconvienent. However, everytime I come across a seemingly downside to hosting here, I ask support about their reasoning and I get an indepth explanation of why that specific greivance I may have actually helps them improve security, uptime, or the speed of the servers.
I really cannot say how much support I have gotten from ReliableSite, for things that otehr hosting companies would have laughed at me for asking. From my experience, you cannot go wrong.