My wife, when active, dated black men only. We are in deep south, and the taboo and attention they got was very exciting to both of us. Most of her men were in their 30s, she was 55. And yes, they all got extremely hard , all were my size or bigger, 7.5, her largest was 10.5 and it took about 8 sessions with him before she could take it all..but when she did, she said they both moved a bit and it slipped right in deeper than ever. She feels it moved past her cervix and when he came in her the lights lit up!! He could also recover very soon, and one night took her 3 times in about 2 hrs. He could last for an hour and had huge loads. After the first night, she was so sore she could hardly sit, but like he said, and we agreed later, it is a good sore..
When we first started, I was always there, then we talked and I knew she would be more comfortable alone, but always (almost) had a video set up in the hotel room or our bedroom for my pleasure later. Her first lover was very thick, and wife very small, so he resized her quite a bit.
At first I would take her to meet someone, but later on after we were both comfortable with him, she would date on her own and even spent 3 days and 2 nights on a mini vacation with her regular. She also entertained him at our home many many times during the day. He was married also and had to work around his wifes schedule.
Key to our success was picking carefully...mostly from ads, and her talking to them on the phone. Unplanned ones were a security guard and a masseuse on one island, and a night clerk at the hotel in another island.