Between 6-8 inches. Nice and thick at the base and veiny. Preferably with hair.

My sugar daddy who fucked and came in my ass probably hundreds of times had a dick like that and most of the 30-40 dicks I've taken over the years have been close to those specs. Biggest I've ever taken was a 250lb black guy in his 50s I met on grindr who had a monster cock about 9 inches and thick as a coke can, made me call him daddy, had me get face down on his motel room bed and slowly slid his massive dick in and out of my ass until eventually he came inside. I don't ever think he got balls deep but it still hurt and I was walking weird after.