Thighs have more flavor because they also have more fat. The fat not only adds flavor to the meat, it keeps it moist. I'll eat either. Some dishes call for thighs and some are better with breasts. Breasts are a little trickier to cook and keep juicy.
I think most people know that thighs have more fat. That was my point of the thread: breasts are generally considered the preferred bodybuilding food because they are leaner, but in higher quantities, they can be a chore to eat. For me, at least, the higher fat content of thighs isn't keeping me from leaning out. I avoided them for years because I had been indoctrinated with the "chicken breast is superior" propaganda, but I think thighs are the better choice pretty much all the way around. To maintain a lean physique with greater than average mass, I don't think their fat content is high enough to affect it adversely and the taste is far superior.