I, personally, prefer looser arses. Mainly cos it feels like what I assume smaller girths feel like when they enter average size arse or pussy. Me, I am 7" around and virgin, or inexperienced, arses do nothing for me. I can get the other person off pretty easy but I need oral or masturbation to get me to the finish line. The arses I have actually blown in have been looser than usually. Then agian, even with the loosest guy I have been with, he can't stand more than 10-15 minutes of penetration.
I can't wait until I lose weight and try relations with the ladies, lol.