I like the TQ.
Any carb can be tuned for good mileage as long as it isn't a over kill on CFM, like a 850 on a 318. LOL
You yourself can rebuild this carb for alot less than new. Even if you have nothing for the carb cleaning now.
Use the smaller primary carb for small displacement engines or low HP engines like a smogged 360 or 400 w/Hwy gears.