So my black Progasm arrived today.
I gave it a try earlier tonight. It's definitely bigger, and was slightly more challenging to insert. Only because I'm not familiar yet with how to tilt it on insertion like I do with my MGX and Helix. The thicker stem certainly makes for a fuller feeling in the anus. And seems to require less effort with conscious anal contractions. It feels nice. And I got a lot of mini-O's from it.
Then I thought I would remove it and try my Helix. I chuckled after inserting it as it felt like I had inserted a toothpick compared to the Progasm. It seemed that once I was stretched open by the Progasm it was difficult for pleasurable feelings to occur with the Helix. So I reinserted the Progasm and had some more mini-O's.
Then I thought the session was over and started removing the Progasm. And found that the sensation of pulling it out was quite pleasurable. So I slowly and gently moved it in and out of my ass for a while using my hand. Then when I was done doing that I sunk it back in and almost immediately my body went into some sort of orgasm overdrive! Almost like manually fucking my ass with the Progasm had increased my arousal level. My prostrate was so sensitive. I think I may have had a super-O, but am not entirely sure. It was stronger than anything else I have had to date yet. Unfortunately shortly after it happened, while I was still convulsing in pleasure my torso had shifted so I was humping the bed, and that little bit of friction on my flaccid penis made me have a super-T. But I didn't care. LOL
A very interesting and pleasurable session.