AFE IS by far the best flowing, while the Ford AIS is the best filtering. All depends on what you want. My main concern was filtration because I drive off road a lot. The AIS with Zoodad flows all the air my truck needs. I myself don't care for open element filters due to the increased noise, reckon I am getting old!! With the AIS the zoodad creates a ram air affect into the intake. Not so with a open air filter. I would probably leave the snorkle in place or modify it so it directs the air to the element, otherwise the air coming in from the zoodad isn't directed anywhere. Although cooling the intake air is always a good thing.