Hello all, I purchased the Helix Syn V about 10 days ago. The vibration modes are nice but it didn't seem earth shattering. I read a post where a guy said he just put it in,layed on his side,relaxed and let it work on its own with your body. I did that last night and within 30 min I started to shake in spread out waves. After 60 min it was very intense and I didn't even touch my penis. It felt like the scared/excitement you get at the top of a rollercoaster. Very intense,great feeling. Even after taking it out the sensation went on for two more hours. Incredible.