Dear, cock fairy
I would love a magically adjustable penis. That way, I'd have the right size for every situation.
At 7.75 x 6.25 I have had no complaints and most women I've been with have commented more on who long my cock is rather then who thick it is. That being said, it would be wonderful to all-ways be able to both bottom out and feel like if the fit was any tighter there would be no way you could go balls deep without pulling the skin off your cock, no madder whom your partner was. I would like to 9.5/10 X 6.5.
But if I had the opportunity to pick and have a new size I would want a world record size, say 14 x 9.