Which of these three, and why? For the two different types of rides I go on, I'm positive I need the versatility of one side platform and one side clips. I would stay with all platform but I want to see what all the fuss is about with clipless. And why do they call it "clipless" when obviously you are clipping in. They should call the old style toe-clips with straps... "straps" and these "strapless" to makes sense of the terminology.

http://www.amazon.com/gp/product/B00...art_bxgy_1_2_p

http://www.amazon.com/gp/product/B00...=ANVB2ADWP1VTL

Amazon.com : Shimano PD-A530 SPD Dual Platform Bike Pedal : Sports & Outdoors