I used IntoVPS for 9 months. Their support is FAST and great about explaining thoroughly every issue. Their prices are very fair, and uptime was NEVER an issue. I had one with 267 days up when I finally took the server down because the client shut down their site. HIGHLY recommended!!
A2hosting.com is able to meet the needs of many webmasters with specific needs. Servers are well-administrated and prices are affordable. Support is helpful in many ways.
I know self-promotion is not welcomed here, but we provide excellent KVM VPS service. We are not so known as compared to Little orange, but we meet all the requirements you mentioned. We will do the job fast and do it right - and pricing is really adequate. KVM stands for Kernel Virtual Machine and its main benefit is very simple. YOU DO GET WHAT YOU ORDERED. Resources you paid for will always be available. Companies concentrating on shared hosting often have to use OpenVZ VPS or something alike, which leads to disasters you mentioned - regular failures, nobody can't do anything and time is wasted for no good. That is why we use KVM VPS system an your project uptime is guaranteed. CentOS 6, convenient management tools and additional features, 24/7 chat/ticket suppor. Check our site if you wish. There are many other companies offering same or similar services here on DP in VPS section of Marketplace. Consider checking them too, as smaller companies have 1 huge benefit that big companies lack - they do care about their clients. Our care is backed up by our team of CISCO-certified techs, which will not let you down. Others may have other benefits, so the choice is up to you.