Interesting. I was considering the Holley refit kit because I have a new tank and it's a bit cheaper. They also have a return-less setup I've looked into. I was also looking at the Aeromotive setup. I wonder if theirs is any quieter.
I will say that the cars I have built with an in-tank pump noise has never been an issue at least to me. My Cuda has an external pump mounted to the frame on the passenger side and I don't even hear that much, sure my hearing is a bit compromised but I have had noisy electrical pumps before and I know the difference. I would run an in-tank pump with a return for sure.