Domain Social Forums

Hello everyone,
I'm looking for a long term VPS host that's reliable and has a great customer support.
By great customer support I mean getting a response within a few hours not waiting days to hear back.
Below are minimum specs I will need for my projects although they can be altered but I think these are good starters.
30 gb+ disk space, 1 TB+ bandwidth, 2 gb Ram, 2+ IP addresses
OS: not sure what is best to be honest
Do you know anything about Rockhoster.com and Libertyvps.net virtual private servers? Are they reliable? What host is better?
Any recommendations of any kinds are very welcome.

Check out plans from trustworthy hosting companies: allwebhost.com and swisslayer.com.
I must say, I love the uptime of my website and the customer service whenever I have an issue. The customer service reps are the best.

The Windows VPS services offered by Rockhoster.com are far superior to my previous hosting service, which I had for more than 4 months. Contact with sales, technical support, and billing has been prompt and pleasant. However, I don't feel that the help goes beyond scripted responses and links to knowledge base articles, and perhaps no further help is needed.
Everything truly is at one's fingertips.