In the end, the final decisions about how a member decides to build his car and its various systems come down to his own preferences and research. As the man spending the money, you need to do what you think is right for your build.
The Holley and Fuel lab information is compelling. Here is an old picture of the triple pump fuel basket/hat without the pre filter socks installed yet. It uses three 255 lph FGT fuel pumps with a fuel pump controller. As you can see, there is not a return tube protruding to the bottom of the pump location in the assembly.
I am not encouraging anyone to do something I have not studied and done myself. If you, as the builder, think you should have a return tube that positions the return fuel at the bottom of your tank — YOU are the final "decider" for your build. You should, by all means, do what you think is best for your build. You pay the bills; therefore, you are, by definition, the final authority on any build-related decisions for your car.
The information I offer on this site is “stuff” I have already done — which had expected/anticipated results without disappointments. You should take build paths and decisions that you feel are right for you and your car, notwithstanding what anyone says — certainly myself included.
Forums like Club Cobra are most beneficial when the members can share their experiences, so everyone does not need to travel the same and sometimes expensive discovery paths. Where possible, I share the discovery logic and testing that lead me to my decisions.
You don’t have to do the same things; I am just sharing what I discovered that worked for me and could be helpful for others saving them the time and expense I paid for the knowledge.
In the FWIW bucket, a return-style fuel system without a pump controller will bypass nearly all the fuel the pump can produce at idle and part throttle. The use of a pump controller matches fuel delivery to engine demand much more closely than a pump running full tilt and dumping the excess at idle and part throttle back to the tank.
The presence/use of a pump controller, while a more sophisticated fuel system design and because it does not run pumps flat out, produces a more appropriate fuel delivery and a cooler in-tank experience for the gasoline and the pump.
In the end, again, you are the builder and the "decider"; you should do what makes you feel most comfortable so the build will meet your expectations.
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