Of those three, I've had Brewdog Punk. Far from amazing, and not something I would purchase more than once. Pure Maris Otter base, with only 45 IBUs, Nelson hops on the forefront, and British yeast. Deserving of a 78 out of 100 perhaps. But not something I would compare with a top rated American IPA. Read some reviews about Thornbridge just now. Despite the 88 out of 100 rating, a lot of people were saying that in addition to it being tropical, it's also quite grassy, earthy, and balanced. Sounds like a New Zealand IPA to me. Not too typical for American IPAs and not my cup of tea either. Couldn't find Kernal IPA.