The Kyser is far and away the best. They don't call it the Quick Change capo for nothing. The capo made for banjo and mandolin is far from bulky and is the choice of many pro mandolin players that I know. I am associated with a large bluegrass organization and Kyser is the overall choice for guitar and banjo/mandolin. The banjo/mandolin capo is easily available from the Elderly Instruments catalog.

I think the Shubb does not stack up.

People who don't consider the capo an essential tool to clean and versatile playing are probably not very good musicians and are limited in what they can do.