Most often, it’s bicolor that’s for sale here. I don’t really have a preference.
To cook, I’d say a modified boil - I use ATK’s (What’s Eating Dan?) method - boil the water, shut it off, in with the (shucked) corn, cover, and let it sit at least 10 minutes, up to 30 minutes. There’s some nerdy sciencey stuff involved as to why that works, but I don’t need to remember that, just the method.
Eating…here goes: I go around the cob at each end. I suppose that defines margins for me, then I eat across to finish it.
Always butter, always salt, buttered with a piece of bread so I can have that as a treat. Apparently, Stanley <bleeping> Tucci is allowing others to credit him with “his” genius buttering trick, but about 70 million Midwesterners would politely disagree…and then call him “Stanley <bleeping> Tucci” behind his back. We’ve (and a lot of other folks) have been buttering corn that way since before his great-grandparents were born.