Fun night, need strap on advice

So I know there are multiple threads on here about strap-ons, but I need some specific advice, and I will request it in exchange for this story:

So Friday night I asked my KH/Wife for some play, I had lost 10 pounds, half of our goal, so I thought it was OK to ask her to release me. She was not in the mood Friday, so knowing my place I said ok, and she offered to let me out Saturday for some oral, with the condition that she would not let me get off. This still sounded fantastic, so I happily agreed, and fantasized all day about getting oral but her stopping short and locking me up.

Saturday night she had a few drinks and when we returned she was obviously up for some fun. She started kissing me, and wanted to get fucked. Since I was still locked I offered to use the strap on, something she's never been particularly excited about, but that night she was all for it. The strap on is much longer than me (much much?), but could have some more girth.

This became clear to me when she was getting really into it, but told me to get a thicker dildo! That is where my question comes in, can someone recommend a good firm lifelike dildo/strap on combo that is THICK!?!?

So back to the story, after fucking her with the strap on for a while, she did release me, and gave me oral, but did not get me off. Fortunately for me, she climbed on top of me, her back to my front, and used her hitachi on herself, all the while grinding her ass into my lap until I did get off!!!

It was pretty fantastic. Now I'm back in my jailbird fantasizing about it, and wondering what thick strap on to order her.