I was confused when you said that it was chowder weather. Then I saw your locale.
Also, a question.... what is creamier than Boston chowder? Is there some spicy, super thick Aussie chowder I haven't heard of and want to try?
Anyway, for me, definitely Boston/New England Clam Chowder. Manhattan Chowder is an abomination.
Best chowder I've ever had was on Cape Cod, along the main highway. Best chain chowder is from Claim Jumpers here in the Western US.