"I came to the conclusion that the optimist thought everything good except the pessimist, and the pessimist thought everything bad, except himself." -- G.K. Chesterton
It comes down to style over substance and there was more substance under Shooter's reign because love or hate him, he was a really good writer and had vision.
Definitely Shooter. I associate him with what was good about Marvel. When he left everything went down the toilet. There are not many Marvel comics in the 90s I liked and let alone in the 2000s. Granted, Quesada wasn't responsible for it all. but I feel he didn't make much of a difference.