Okay, a few more important things. Although I filled out the survey, but ... somehow they escaped:
- Twist would be great though
- Self-lubrication, however, is very important too.
- It needs to be able to plug into an outlet, if you make a battery-powered toy that you can't bang for hours, I'll pass.
- If you also add suction to it, then - as for me - the price does not matter and I can pay even crazy price like 1000+.
PS Have you thought about "Tier Levels"? Well, for example: basic only sliding movement, and for an extra charge options: self-lubrication, twist and so on...