This looks perfect way to solve the current dilemma of choosing a "daily driver", but isn't it convenient to have stored all of passwords or details in profile in one browser or is there a way to keep everything in sync. I definitely would like to give a try to Safari.
Better is a subjective thing, especially when it comes to FOSS. Better when you want to see the source? Sure, if that is your primary need, but for most people that isn't the case.