smaller for anal but bigger for sucking.
Any size as long as it`s stiffened up to 10 inches,but the usual size is 5-6 ins.
Mind you i do enjoy a small one 3 ins for sucking occassionally,as long
as it comes.
I like from 6" to 7.5" .Havent had bigger than that but would be willing to try
Living bi-cariously through Lush
Limited experience with actual cocks, though more with plastic ones ... for sucking, I think almost any size would be good. Big is nice because ... well, it's big. Small is nicer because you can get more of it (or more easily, all of it) in your mouth, which is probably great for the guy. For anal, I'd definitely want it not too thick, length probably unimportant.
A critical set of dimensions that are often overlooked are diameter (or, to borrow a forestry term, caliper) or circumference, what is commonly referred to as "girth". If I've got my choice between a 10" cock with a 1" caliper or a 6" cock with a 4" caliper I'm going to take the longer, thinner cock because that gives me the greatest in and out motion combined with prostrate contact. I can imagine being a woman with a vagina with a different set of tactile receptors enjoying the thicker member more.
The most perfect cock I ever had belonged to a swinger fuckbuddy in the DC area. He had 7.5 inches with about a 1.5-inch caliper of absolutely delicious Swedish-English sausage. Savory on the tongue, and sweet in the chute. ?
About 7" is best for me any bigger is uncomfortable I have had bigger but didn't enjoy it as much as for thickness I haven't had a problem with a guy being too big so can't say
6 to 7 inches, not too thick, more than enough to get your fingers round but long enough to stick out gripped hand...
8”+ but I’m a size whore and love big thick long cock deep in my arse
Depressing for those of us with good length but not much girth.
Since I would be receiving a cock anally and of course performing oral, I have found that I like 9 inches or longer. However, my one boyfriend was 10 inches and very thick and I had a lot of trouble receiving anal. My one trans woman, was 9 inches and slender, and I hardly needed much lubrication at all!! Definitely in my opinion for me length I can handle but girth is difficult.