I just got some Nashbar clipless MTB pedals with a Lake MX101 MTB shoes. It took a few minutes for me to firgure out how to get in and out of the pedals but after I did I went outside. I couldn't believe how much faster/effieicent I was. I could pull one leg while the other leg was pushing. It's like having a better clutch, more power to the wheels.
Also, I can now bunny hop! Man, I should have gone clipless years ago! With platform pedals everytime you hit a bump your foot slips off the pedal. Any of you had the same experience as this?