Currently, I have a small dedicated hosting package with Centohost.com and like it a lot. Response times are very fast for ping and page loading.
They also offer nice VPS hosting accounts ; ) Good luck!
I know rockhoster.com customer service is absolutely great. Not that you need to use it that often! But lightning quick replies and a very proactive, friendly, helpful attitude. One or two little glitches were remedied immediately and they are clearly dedicated to superior customer service.
So far so good. I have been dealing with Rockhoster.com for over 5 months and fully-satisfied.
The tools provided are great. Pricing is reasonable. The technical guys are very helpful, professional and courteous.