I'm thinking about clipless pedals and was trying to figure out the brands/models. My first thought was Shimano 105 (based mostly on the rep of the brand/model line), but a bunch of reviews I've seen suggest the Speedplay instead, saying they have more float. An experienced friend suggested I save my money and just get the Nasbar branded ones, as they are perfectly serviceable.
I know that when I pedal, I don't have perfect form - my knees tend to go outboard some at the top of the stroke, and back in at the bottom. Would float help keep my knees from loading up (a major concern for me)?
The other factor is weight - I'm almost 300lbs, are there any pedals I should stay away from weight-wise?