I use the MZE and have no complaints about it.

I also have the " plainsman" I am tinkering with it on my back up bow.
It was easy to install and as Phil said very good machining.
So far I have not had any tuning problems with it and so far it is turning out to be a good rest I just hope that this rest gets a following even tho it is the new kid on the block as far as rests go.

Try it you just might like it