I used this with my partner and they absolutely loved the pinpointed stimulation of the curved shape along with the external massager. The handle made it really fun for us to play together and gave me an opportunity to control it. This was our first time experimenting with prostate stimulation and the Helix shape specifically was great as an intro for my partner since it took less muscle engagement than say the Eupho Syn to make it rock back and forth against the prostate.
The tapered neck helps it to stay in the body long-term, so you can contract your muscles around it for hands-free stimulation.
Aneros makes an excellent product. Something about the Syn makes for a great feeling when inserting and the product nestles comfortably for hours. While the concept may seem like work or confusing it really isn't and for particular for those trying to develop their perineal muscles it provides both an incentive and the ability to track progress.
I'm a big fan of the original Helix so when I saw this new version I was skeptical that it could be an improvement and not just a ploy to get me to buy a new product. I'm glad that I got it though. It's now my new favorite toy, sorry old Helix! What I like about it is the flexibility of the base. It still gives some exterior pressure without being too rigid. The silicone is great too. It's a bit more comfortable. I love it.