From what I've seen on the local trails... add Hot Chili, Bergamont, Stevens, Bulls, Ghost, Canyon, Cube, Votec, Simplon, Rotwild, Radon and Rose to the list. There are most likely a couple others I'm missing. From the bikes I've come across, they all seem to have around the same specs, frames look similar to what you can get back in the US... a lot of copy cat designs.
There are not many of these brands you can get in the States for the same reason you don't see traditional US brands sold here. I would say get a bike where you live. Why try to go out of your way to get a "German" bike? It'll be hard to source, get warranty work done and the exchange rate is not too good.