Which Carb Gives a Balance of Power & MPG?

Best all around carb for me has been a thermoquad. Parts to tune it are hard to come by but if you can find one that was for a 400 or 440 the jetting would be just about right for a well oiled 360. I once had one off a E58 cop 360 that I put on a mild 350 Chevy that ran like a scalded dog and got good mileage. For overall tunability and ease of finding tuning parts go holley