I really like blackvp. I usually run linux and went with them for the openvpn option using NL server. The connection was very reliable. Easy connect and stable. My only gripe was that on my xp machine the openvpn gui provided didn't allow for saving username and passwd. After having to enter the user and pw several times I found a gui that was compiled allowing pw save, so connecting became as easy as it was on my linux machine. I am very pleased with the service.