I'd go with Walleye by a country mile. However a fresh fillet off of a Burbot is sum delicious eats! I think due to their healthy consumption of crayfish they possess a unique flavor that transcends into a mild white flakey v shaped fillet that has a nice crayfish / shrimpy finish! Again ling is really delicious and a for sure top 5 freshwater fish in my rankings as far as eats go but Walleye and yellow perch take the cake for me.