Pleasant but a little disappointing
This was my first experiment with sex toys of any kind, at the suggestion of my girlfriend. I chose to try a Tenga product partly because they seemed to be the most highly regarded among male sex toys, and also because I found their general aesthetic and design philosophy preferable to a lot of the alternatives. Rather than trying to emulate the appearance of genuine human body parts, as occurs with toys such as Fleshlights, and thus creating an 'uncanny valley' effect, Tenga toys seem to be designed not to give a simulation of the experience of sex, in which case they would be likely to come off as the lesser of the two, but rather to be a very different, but nonetheless pleasurable experience, both in terms of appearance and of experience.
Given my motivation for choosing this, I was expecting quite a pleasant experience, and while it was nicer than 'normal' masturbation, it wasn't as different as I expected. The sensation of the interior was very pleasant. However, the 'rolling head' effect didn't really make any significant difference to the experience, and trying to use the fuction was just a slightly irritating distraction. Another minor issue was the opening. The entrance was uncomfortably tight despite, in theory, being suited to my own dimensions, and so until I was actually in (which took longer than I thought it would), it was quite uncomfortable.
I am still curious to try the Tenga brand, but I am pleased but ultimately disappointed by this example of it.