Thermoquad worth it - or no?

I have a line on a TQ 2146 carb. I have a 318 with a rpm air gap and eddy 800 now. I now the square bore won't work with the TQ. I also have a 408 with a Super Victor intake and a Holley 750 dp. Is a TQ a good choice, or a better choice. I thought they were higher cfm, but my brother told me only the aftermarket performer series were high cfm. Whaddya think?

TQ's are great carbs in good shape. The High Performance carbs, 340, 360 HP, 400 HP, 440 HP, are set up better than the run of the mill carbs. Good gas milage and pulls like a freight train on the top. They were supposed to be faster behind an automatic trans since you could adjust the air valve to open without any bog. They can even get good mileage out on the highway. They are probably the best dual purpose carb there is. Hey, I even like Quadrajets for the same reason. Most people don't like either. Used to be able to get them cheap. All TQ's flow at least 750 cfm with those big secondaries. I do not have highly modified engines so I never had to tune too far from factory High Performance. The Carb number is on the drivers side rear mounting ear on a TQ. 2146 is not the carb number. TQ center sections do not melt. They keep the fuel cooler.