I use it for several months already.
I like the fact that we can fix it in the back of the head, the storage capacity.
I have not found other models.
The price / quality ratio is very good, a ridiculous price for a cool gadget and practical
I would do without this choice problem, let me who my picks the trainer at least I know where they are and I can change without letting go of my guitar.
8 because of the system by mounting a double-sided tape and fragile to wear the platform.