Definitely 40-28-40" at about 5'3" to 5'5" ...
My idea of perfect is a full figured, but slender woman of around 40-28-40" dimensions on 5'3" to 5'5". Probably my two favorite examples are German Chloe Vevrier (
Boobpedia) and Czech Karina Hart (
Boobpedia). Going even a bit shorter and even more petite in blondie fashion, there's a reason why Danni Ashe (
Boobpedia) was the billion-download woman a decade ago.
But my ideas of perfect vary.
In the thinner form, Shay Laren (
Boobpedia) drives me insane. Despite the lack of perfect symmetry in her bust, her hourglass is killer.
On the BBW front, I'm hard pressed to find a deeper lust for any woman than Maria Moore (
Boobpedia). I'd have a hard time picking even non-BBWs over her, and she may very well be my favorite woman of all-time (of any size or proportion).
More to my wife's ideal, I go ga-ga for a stocky, top-heavy apple shaped woman with sweet love handles. Arianna Sinn (
Boobpedia) is a complete and utter delight and rocks my rod as much as my wife does.
I'm sure some of my picks will dumbfound many. But the concept of "perfect" in my book is a woman who can combine unique looks with a proportional hourglass or, in far fewer cases, a top-heavy apple form.