lots of information:
web page Rohloff Speedhub You can trust this information.
I use two Speedhubs. The first was taken for a 25000km world trip. The second one, i need for my second bicycle. Both with no problems.
In most parts of the world, you do not get quality Shimano parts (if you get). Another problem with Shimano: they change the construktion of the parts many times. You always get the wrong.
wheel stability
Serious Problems with the Speedhubs exist. But they are really rare.