Youre going to want to start with narrowing things down... Main Street Comp? Meat Comp? Live Comp?
Main street is very very different from Meat and Live, and ones advise may be very wrong if applied to the wrong type of comp.
But be aware, even the generic info youre asking about is likely going to be someone's secret thing... Be it tone channel, barrel length, back bore, cork notch, lucky color, reed material, soundboard, and so on... And in the end, its going to be a mix of everything that makes it work.
Wade