Ergoplay Model Michael Tröster

This is very well made but as a design it is not particularly practical to use. It isn't possible to easily and quickly adjust anything. By the time you have loosened, moved, and retightened things it can be difficult to know if you are more comfortable or not. The leg pad also slips towards the knee as you're playing. Annoying. Look at the De Oro Guitarest instead.

Edit: Bought the Tappert and it's brilliant.