Pros:
Love the high amount of adjustments with this shoulder rest .im a luthier. I find centre mounted Chinrests are really the best type of rest for a viola or a violin as the secure to the lower block and does not put pressure on the ribs , so many shoulder rests can therefore be to high when using centre mounted Chinrests . This shoulder rest overcomes this
Cons:
Nothing
Other:
I think primo is better for viola and secondo better for violin just on my instruments
