ditto on NatNet... there servers are fast and support is very fast. The best thing that I can say for them is that they put up with my shit with a smile.
We have multiple servers with them and I make quite a few non-standard requests from them for server setup... they are always prompt to fix any problems and are great to deal with. Many times I have had Tomas call me on the phone to make sure that the support request is done exactly as I want.
