Everyone has a different shape and need for a hood or a wet suit accessory of any kind. Your best bet is to go into your local dive shop or surf shop and check out the different styles. Personally Rip Curl's hood fits me very loose and I am always getting a cold rush to my head with every dunking I take while the Hyperflex billed and bibbed hood fits me very nice with almost no water wash.
I also wear a Quiksilver hooded vest. It's kinda tight around the neck when the hood is NOT up. But when it is on, it feels great and keeps my head, chin and ears very warm! The vest part also adds 1 mm of thickness. So I'm usually good for the whole winter with the hooded vest and a 4/3. At least for Va Beach and OBX.