I would have to say "very Satisfied". I have been playing for well over a year now. Like you I own a private server that I do have a few users on. That server started as vanilla, then went to a beta snapshot server that we were updating every week. To its current state a FTB server running the Mindcrack pack + mystcraft. I'm not much of builder but I love some of the automation and how to figure the best way to do it. Right now I am working on an On-Demand (JIT) crafting system. I've figured out a good way to use regulator, retrievers & electric crafting tables to do most crafting. Then I think I have a way to automate keeping a certain amount of items in inventory (for example blue alloy ingots) using turtles.