I can't speak to the others, but a year and a half among those who take blue crabs
very seriously has taught me a couple of things about them.
The season here runs late summer / early fall, but they're hard to come by these days, even locally. The Chesapeake is in bad shape. Folks here wouldn't accept anything less than steamed live, however, so the local shacks get them shipped in from Texas (the gulf coast) and, I think, to a lesser extend Florida year-round. Some insist the flavor of the gulf crabs isn't quite as good, but I'm not convinced anybody but the most seasoned crabbers could tell the difference -- and even some of those who insist they can tell don't mind so much. In short, provided they're being transported quickly, I don't think there's any reason to believe that live blue crabs in Chicago are going to be any better during any specific season. And I have to agree with jlawrence01. While I haven't eaten a ton of crab, since moving here I've been finding other breeds somewhat lacking flavorwise. The blues are a lot of work, and totally worth it.
At least around these parts, crusted with Old Bay (or similar homemade mix) and simply steamed is the way to go. No butter. Maybe some white vinegar for dipping. I'm finding it difficult to argue.
Dominic Armato
Dining Critic
The Arizona Republic and
azcentral.com