Chastity and orgasm denial discussion

I realize there are several discussions here regarding strap-ons, but I’m looking for targeted advice. In return, please enjoy this story: On Friday evening, I requested some playtime from my KH/Wife. Since I had lost ten pounds—half of our target weight—I felt it was a good time to ask her to release me. She wasn’t particularly in the mood on Friday, but knowing my place, I accepted that gracefully. Instead, she offered to let me out on Saturday for oral sex, with the catch that I wouldn’t be allowed to finish. That still sounded wonderful, so I agreed happily and spent the day imagining her giving me oral but stopping just short of letting me come. By Saturday night, after having a few drinks, she was clearly ready for some fun when we got back. She started kissing me and wanted to get fucked. Because I remained locked up, I suggested using the strap-on. Although it isn’t something she’s always been super excited about, that evening she was fully on board. The device is much longer than my own member (perhaps even more so?), though it might need a bit more girth. This became obvious when she got really into it and told me to grab a thicker dildo! That brings me to the question: can anyone recommend a good, firm, lifelike dildo/strap-on combo that is THICK!?!? Continuing with the story, after using the strap-on on her for a while, she did finally release me and gave me oral, but still didn’t let me come. Fortunately, she climbed on top of me, facing away from my front to back position, and used her Hitachi massager on herself. Meanwhile, she ground her hips into my lap until I finally came!!! It was quite fantastic. Now I’m back in captivity, fantasizing about that night and wondering which thick strap-on to order for her.