In my mind, a double is aesthetically at its best with barrels very close to twice the pull length. They just look proportionally correct in my eye. Barrels much longer look like something for a pole vaulter & much shorter look Stubby. In the full-size picture, this gun appears very well proportioned to me.

At 5' 8˝" & well fit with a 14" LOP I find 28" barrels to be my all-time favorite, though I have done some good shooting with anything from 26"-30".

Miller/TN
I Didn't Say Everything I Said, Yogi Berra