Pack Goat Central

I've used a cheap Harbor freight side grinder plus a flap disc to trim hooves. 

I've also used the regular "scissors" trimmer for the same purpose. 

either way it's alot of work on 6 goats.  I'm toying with purchase of a Hoof Boss, and would like feedback from others regarding whether they felt the investment worthwhile, and what specifically do they like about the Hoof Boss over other methods?

thanks in advance. 

shane