AkaiHebi - I do that quite often. Although, low stimulation never made me drip precum, in fact, I rarely have any precum at all. Don't know if this is any indication for the onahole matter.
Teasing other erogenous zones would work only if there was a partner, no?
I mean, moving my free hand on my own anywhere on my body during masturbation, it's just making me loose focus and it feels rather annoying.
0xFF - I tried my Mouth of Truth. Hope I don't sound stupid, but it was too stimulating. Waited 2 days to go at it and it made me cum within 5 minutes. I took a short rest and tried to have another round but it just felt strange, I could not keep a full erection and practically felt lost inside of it so I had to finish with my hand.

A few days later I tried it again and it was the same procedure. Came within minutes and the second round was unpleasant. I kept pushing the onahole down but I couldn't reach the end.
Also, I don't know why everyone is so focused on the teeth, I didn't even feel it, except for when I entered and it wasn't painful or really stimulating at all.

Cr4zyDuck - I am not circumcised. What 0xFF wrote after you is true, sometimes the foreskin keeps sliding back on my glans and it's kinda annoying.
argture - I constantly look for new porn that excites me, so the visual stimulation is given.
I may have a low libido, but otherwise I think I'm OK (or maybe not). I mean, I have random erections any time and fapping with my hand still feels good, so...
I rarely fap with a morning wood. Sometimes it feels good, other times not really, because I have a strong urge to piss after waking up. And after the piss the erection is already gone.
Holding in my pee before fapping really doesn't feel good for me, I tried it in the past.
Nope, I'm not into butt stuff.
(Don't worry about your english, all of us were starters at one time. In fact, I seem to be a hopeless starter with onaholes.)
Other insights:
I still did not touch my Bangee Shake since and I'm not fond of the Mouth of Truth, even though she was the one that motivated me to get into onaholes. It's true what others say, she's a real pain to clean, it took me more than 30 minutes and almost fell asleep in the meantime so when I think about the cleaning process before each fap, I'm rather thinking "Nah, not worth it, let's just go with my hand." (Her big mouth is also constantly open and even if I use just a little lube, everythhing gets messy around my privates. Plus, her side of the lips already started slowly ripping Joker-style, only after 2 uses

I am slowly starting to like my Vagina Wrap more and it looks like Tight Sister Kirino only needed some breaking in, because now she feels somewhat better. Still, both are far from the ultra amazing experience.
Thus, I've ordered some new holes, but of course I've run into some problems, which I will explain in another thread.

Thanks for your help, guys.