Aquamax SportFish 600 was the only high protein feed any feed store carried within a 30 min drive (furthest I checked) of where I live. My fish would eat pondfish 2000 OK, but won't hardly eat gamefish chow (main thing anyone carried).
Also, I really like the AM LMB.
I've contacted everyone in my area to find an alternative to AM 600 if/when the supply runs dry again.
My local dealer FINALLY got in some 600 in today (that I've had ordered since April).