I've been using Ramnode for a little over a year now and it's great. I chose it mainly because of the unbeatable prices and they have a lot of options for machines that suit my needs. I use it as a webserver.
On a few occasions, I've had to contact support and they've been really helpful. Yesterday I was trying to set up a private network between two machines but being a bit of a noob I couldn't figure out how to do it. They were very patient and answer every question but it still wouldn't work, so they offered to access my machines (given my permission) and fix the issue themselves which they did swiftly.
Very happy with this service and I will continue to use it and recommend it.
Also, I've had 0 downtime issues in all this time.
