This is good to know with the DW 200; the price is surprisingly reasonable. When I had a Wally 250, it did make a bunch of noise, like screaming noise. I switched to an Aeromotive 340, which sucked (not in a good way) for different reasons. The Wally 450 (pretty much same price as the DW 200) turned out to be the best choice; it's also good for making lots more power than can be covered by a 255 lpi pump. I never figured out why the 450 was so much quieter . . .
On the baffling in the Tanks Inc. tanks, the one I have (universal pickup truck tank) has amazing baffling (perforated wall of separation) and a fuel bowl for the pump. It controls slosh excellently. With this in mind, different tanks have different features, but if you got a tank that didn't at least have a fuel bowl for the pump, you probably got a tank for carbureted usage, which is not what you want for EFI. They sell them for specific purposes (even the universal tanks).
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