It's not dissimilar from tilapia; mild flavored whitefish. It's not as flavorful or tender as trout, but better than catfish.
I hear that water quality and, to a lesser extent, water chemistry has a huge impact on taste. I've sort of noticed that in certain lakes compared to others.
I challenge you to a duel, thems fightin' words. Fried catfish is one of the greatest things on the planet (mind you not terribly healthy).