Newbie here. This question may have been already beat to death, but can anyone tell me really how much improved performance you really get from clipless shoes/pedals over just a regular pedal using a clipless, or just rigid soled shoe? I had a Rans Stratus a few years ago, and am now am planning to buy a V2. I am "fairly" interested in performance (enough that I will pay for an upgraded wheelset and maybe some other components) but I like being able to easily put my feet on the ground. The LBS here says I would lose 30 percent efficiency. Really? Seriously? I don't remember ever "pulling" my legs on the Stratus and I ran it fast (over 90 rpms) in the top gear on some of the flats. I had basketball shoes on then. I concede now that I should at least have a rigid sole (I bought a pair of Shimanos) but it's hard to believe you get that much benefit from clipping in. Someone please convince me. I hate learning new things.