Platforms by default; I've got size 14(US) feet. When I was interested in trying clipless a few years ago I couldn't find a shoe that fit my feet. I looked for 6 months, but nothing in any bike stores or at REI (they tend to stock larger sizes of all types of shoes). I'm satisfied with pinned platform pedal on my bikes. Current favorite pedal is Crank Bros 5050's. They're expensive at full retail, but can be found at online sales for <$50.

Best advice: If they're comfy and you're getting out and riding, that's the perfect pedal for you.