Depends on who it belongs too. Not every one is the same.
My guys one is the sexiest ive ver seen. Just one look at it gets me so turnd on I have to have him,touch him,lick him.....omg its even some times too big for me to handle.
i think it depends. it has to be well groomed. not a turn on when it looks like a snake in a overgrown garden. lol. plus they have to be circumcized. but i think the thick, long ones are awesome. my sweetie's is idealic!