I saw some in Morrisons a while back and tried it, it was ok but I have tasted better, others might really like it. I reckon Coddy will be right about there being a lot of bone in Pouting as the fillets were all very small. Where you would have one piece of Cod you would have to have about three fillets of Pouting for a meal.
As for the Ling, as Tony says it is really nice. A similar thing happened to me years ago. I caught some Dogfish and kept a couple, when I got home I skinned them and baked them in the oven. One taste and straight in the bin with them, for me and SWMBO. I had had them before quite a few times and they were always nice, they were always fried too lol.
Jim.