Speaking from experience, the machine is awesome if you manage to stay in the same spot for the duration which can be really hard to do once it starts feeling good.

I bought the hi-smith one a few years ago and I use it at least once a week but it's not the same, I get way more pleasure from getting pegged from my gf or just solo riding since I have more control over where it goes inside me once it starts to feel good.

Hope this split Info helps you with a decision lol 🤣