Joining late, I know...
My amazing wife took in both her longest and thickest at the same time, after having explored differing BBC for 7-8 years.
He's about 10.25" long, shaped like a thick sausage the entire length. Cut.
She moans when he's the one on top while they're warming her up, stretching her pussy out to fit him.
One of my favorite videos of her is one time that she rode him, pressing her athletic legs outward as far as she could, while also grinding her hips downward onto his cock, but still keeping herself up in the air somehow. I mentioned it, and she told me that she only had him about halfway in, and she was having to go slow.
He then reached up, grabbed her hair and wrapped it in a fist, then pulled her down and pressed himself to the hilt in my wife.
Fuck.