I'm thinking about buying a new Eb and I understand Schilke makes some great ones. I know you can get different bells since all the Eb's are tuning bell. I understand many people use a brigher bell for chamber and solo work and darker bell for orchestral. My question is: Would it be easier to darken a 3-valve or brighten 4-valve? I know some people say the 4-valve models are too heavy to appropriately play say, the Haydn or the Hummel. I'm thinking that Eb's are plenty bright anyway and a lighter bell would be great on a 4-valve for solo and a heavier bell would work for when you're trying to sound like a bigger horn(Bb, C). Would that be a wise choice? Any thoughts?