I have one. Love it. It really saves my hands and seems to get deep on the big muscles. My horse will sigh and go to sleep unless I'm going over a part that really needs it, and then he will lean into it.
I loved mine so much I decided to become a dealer for them.
I like it because it's not a lot to pack or haul around. But does so much when you use it. It's easy enough to use that my boyfriend can use it for me, when I'm not there.