I did about 6 brews with it and all of them had harsh bitterness (my term).
Interesting...I've found exactly the opposite.
This might be my subjective observation but JamilZ had similar comments about FWH on some recent BN shows.
I mean is it works for you go for it.
I am just sharing my experience.
I color of my cooler is orange,
I fly sparge and recirculate,
decoction mash is not a stranger in my household