i certainly dont think that I have the perfect penis. although ive heard from both men and women that i do, i think the perfect penis is one, uncut. and two thick. i nice head is also important. but im more into pussy so i think the major factor is how it feels in the pussy. i cant comment on that due to a lack of pussy so...ladies, its all yours.
I don't have a "perfect" penis either...I think penises should fit the man! What looks good between one man's legs would not look good between the legs of another. There are certain characteristics, however, that comprise a good cock. Some are: nice veins, a well-proportioned head, and a thick shaft. A great set of balls also complements a good cock really well.
I think that is one of the more perfect-shaped penises I've ever seen. I find his dimensions (even though I don't know what they are--any guesses?) and the lack of curvature or other "deformities" to be the golden mean of male genitalia.