How much do you care about buzzing? I like in-tank pumps for EFI. You can isolate the external aftermarket pumps so they don't buzz the chassis, but they still make a lot of noise. Some of the early Nissan EFI cars (280SX, 200SX) had external pumps and weren't loud from the factory. No idea if aftermarket replacements for those early pumps are noisy or not.
As to the fuel cell, it depends on where you're putting it. In a crush zone? I like poly and foam internals.
Because when you spend a silly amount of money on a silly, trivial thing that will help you not one jot, you are demonstrating that you have a soul and a heart and that you are the sort of person who has no time for Which? magazine. – Jeremy Clarkson