I'm totally 100% bottom, so got no idea what is best to fuck, but when i'm rimming arse, I like a nice loose hole to slip my tongue in. However as I like guys who are all top and don't take it in the arse, I mostly am licking out tight arseholes.
I'm going to tease ya for a bit smc, i'm not letting on where in the tightness scale I am, Tho I will tell you its not the first one, but I think you knew that already.