Heavy D, it just happens that I got my Power Grips from http://bikeparts.com simply because they ship to P.O. Box addresses, but google is full of suppliers. I can't do a comparison to clipless, but they're way better than toe clips. They come in two sizes, and the large will work for you, but I'm not sure all dealers carry both sizes. For what it's worth, I bought straps and pedals as a unit, cuz I'm not expecially mechanically inclined and that's not where I want to spend my time.

Power Grips do not require a special shoe, which was important to me, and the way I ride.