Ok i need help from you M B/off road bikers. I want to upgrade my pedals on my bike, and get the appropariate shoes, i was looking at clipless as i want to try to increase uphill power etc. however, after looking at mountain bike pedals, there are the SPD type and the normal flat type. as far as i understand it, the flat type are more for downhill sort of bikers. with regards to the SPD type, if you are off roading, is it not difficult getting your feet off them quick if you need to put your foot down? I guess what i am trying to get at is which is best for off road?