Actually, Magnums will fit an average sized dick. They're tapered at the base and are roomier at the head. Picture, if you will, a condom shaped like a baseball bat, with a reservoir tip. I'm not large in any capacity (even though I've gotten the ego-inflating fib from ladies a time or two), but I can get away with wearing a Mag.
They seemed to be designed for guys that hate the 'crushed dickhead' feeling, which does suck with some brands.
The real size condoms are the Magnum XL's, where you really have to be a backwoods, Bamma, deep country, tree trunk having mofo...those sizes where you get turned down more than not.
I wouldn't mind be a
little bigger, but being average is better than being too big, especially if you prefer intimate sex like I do.
Wouldn't hurt to try one out (regular Mags, that is), just to see where you stand them. That roomier feel at the tip might be just what you're looking for.