Fuelab and Aeromotive are well known for quality fuel products.
FASS/AirDog are Cletus-come-lately's who stepped in to cure a problem (VP44 pumps cratering due to cavitation from air in the fuel) that wasn't even the problem! It was a machining/assembly tolerance in the rotor head of the pump.
I know I don't do myself any favors in this industry by stomping on as many toes as I stomp on when I cuss the FASS/AirDog dynasty... And I realize that there have been improvements made by both companies. And lots of big name people use them in their COMPETITION vehicles. That's fine when you're sponsored and you don't rely on the truck to get you to down the road to work every day... or when getting down the road IS your work.
I use the factory setup on all of my trucks until it becomes a problem. I did it on my 12 valves even before it was proven you could make 700 on the factory pump... I did it on my CR's WAY before it was proven that you could make 700 on the factory pump. That was back when if you didn't have a FASS on your CR you were an absolute lunatic and you were going to trash your injectors and melt every piston in the engine. And that was on a bone stock truck!
Meanwhile, I kept on rolling for hundreds of thousands of miles on the OEM "junk" with the biggest tune I could find while the FASS/AD owners continued to get stranded. Or at the very least they'd start starving the system once they hit 1/4 tank
Sorry for my first rant of 2016
And sorry in advance for the rest of them that are sure to come! LOL