The first few times I played around, I didn't get too much out of it. I mean, it was kinda fun, but there wasn't much physical stimulation. There was a mental aspect to it, but it didn't prove to be enough. Now, when I just pawed off with something back there, the sensation was stronger than normal.
I don't know how many times it was before I started to get excited from the play itself but eventually I did start to get arousal from just the play. It's still never been enough to actually get me off, though. When I tried out my Zetas for the first time, my Helmutt just didn't do much for me. The texture was nice, but it was too small. The Akita provides me with some fun, I tend to get hard as I'm putting the knot in from the feelings on my anus. I like being stretched and it provides excitement. It's enough by itself, but... I'm a size whore, so I like it even better when I use them both together

Double knotting them provides me with some intense orgasms but I still have to do it manually. Thus far, nothing has managed to get all up on my prostate... that I know of... nothing that's managed to get me off without at least some pawing.
I'm going to continue, though, because I still enjoy it. I'm going to try moving up to something larger (which unfortunately has to be from another company) to see if I like that better.