Hammer Craft is honestly one of the best Servers any of you will ever find. I spent months jumping from server to server, suffering griefing to flat out corrupt Mods. It is a great Server, and the Rank System on their Tekkit Server really taught me how to use all their mods they had to offer. The community is great too, helping me get started, then leaving me to build as I pleased. A great independent Server, and even better if you have friends, cause you each learn all the mods and can protect your stuff without relying on "Factions". The Protection Stone plugin with the no griefing rule really makes the Server a great experience.
Here's a few pics of my most recent factory build and still in progress 8) :