What is best VPS I can get for $21/quarter or $42/biannuall?

I already have 2 KVM VPSes at that price. 1 from @MCHPhil, and 1 from @GoodHosting. Both VPSes perform well.

I just want to have experience with other providers, what is the best VPS I can get at this price?

http://ift.tt/1dvHQ0Z