Fuel hose AN6 or AN8

So if I run 8 to carb 6 to return regulator back to cell what is A good regulator and pump that’s not going to break the bank
I recently upgraded to electric Summit pump and Holley return regulator. Works great and no more issues with heat soak while street driving. The Summit pump has a 1 year warranty. I have an old Holley spare pump in the trunk that I can swap out in 5 minutes if needed since I drive 50 miles to the track.
Summit Racing® Electric Fuel Pumps SUM-G3136-17
Holley Carburetor Bypass Style Fuel Pressure Regulators 12-881