Maybe a new carb?

Been fooling with thermoquads and quadrajets for the last 25 years. always ran thermoquads on my 440 dart. The current one i built with instructions from a guy named Demonsizzler who was the thermoquad guru from moparts. I built it years ago and he told me what to do to make it right on my cammed 440. Well, the primary shaft makes a horribly annoying whistling sound because the shaft bore has some wear in it, other than that, it down right screams on my 440! Been thinking of finally just buying a new carb for it, but like i said, ive only ever messed with thermoquads and quadrajets and a little bit with edelbrocks. I know nothing about a holley, never messed with one. Wondering what else is out there besides holley thats closer to a thermoquad that will indeed perform well?