Anything deep fried in golden batter which doesn't taste like fish. I like walleye, pike and channel cat equally. I actually can't recall eating a perch...If I had to pick an absolute, it would be Long John Silver's or Red Lobster deep fried grouper. I had mahi once and really just remember the texture was more like chicken breast than fish.
There are lots of fish out there that are great table fare. Someone early on noted it best, almost anything out of cold water. I love blue gills (sweet tasting little bastages), crappie, walleye, pike, and even cats out of cold water. As water temps go up, the cats and northerns are the first to fall off my shopping list.
From the ocean, halibut and dolphin are excellent, but black sea bass are even better. Grouper is something I would really love to try, but all I've ever caught were too small to keep.
I am not a big fan of the salmonid species. Just too oily for me.
Do wild channel cats taste different than restaurant served, Or is it something you acquire a taste for ? I've only had it in restaurants, Once down south , I assume they were probably farm raised and they had a mud taste that reminded me of warm water mouse river northerns. I couldn't eat it. Another time I took a chance at the golden corral, I wasn't expecting much and I was glad I only took a small piece.