I find that most fish is too bland and light, and I don't enjoy the texture much. I have the same problem with skinless chicken breast. However, if I marinate these meats in lemon juice, they become really tasty. The fish usually turns softer and mushier, but very tasty, and the chicken breast turns firm for some reason, and has a much chewier texture that I really like. Plus the taste improves a lot.
Fish eyes are pretty tasty however, and sometimes are amazing. They seem to be better and sweeter when the fish is very fresh, they even taste almost like fatty berries sometimes. Fish organs are disgusting, they're one of the most bitter things in the world.
Chicken legs/thighs, the organs and the bone marrow I really enjoy as is. I haven't had conventional chicken yet, and I don't think I will. But some people claim to like it.
Most cuts of pork are really tasty too, especially if it's organic.
From beef I've only had conventional grain finished. The lean meats are tasty (though not ask much as organic pork or organic chicken), but the fat is usually pretty disgusting. Some of the fat will be okay sometimes, but most will be almost inedible in my opinion. By contrast, pork fat is pretty tasty, and it will only taste bad if it's from conventional pork, and then again only some of it will taste bad, maybe like 50%. Or it will only start tasting bad after you had more than a little.
Rabbit isn't bad, but it's too lean. Rabbit brain is pretty good, but you only get a tiny amount of it per rabbit. I haven't noticed a lot of difference between conventional and organic rabbit. They were probably both fed the same all-grain diet. It tastes almost identical to chicken, minus most of the fat. And the meat is a bit more firm.
Conventional goat I don't particularly enjoy, but it's edible.
Conventional lamb is pretty good.
Oysters can either be a mouth watering gift from the gods, or really yucky things that you eat only because you spent so much money on them. It's hard to get the good ones. I'd say I only get good ones about 20% of the time I buy them.
Squid is amazing. Well, most of it is. The tentacles, mouth and eyes are. The "body" is only good if you remove the skin, otherwise it tastes pretty bad. Oh and the organs are as bad as fish organs.