I used to run MKS quick-release pedals, but after losing two of them, I decided detachable pedals might not be so great an idea after all. Here in Japan, where folders are very popular, losing pedals is so common that many MKS dealers sell single pedals. Now I run Shimano XTR pedals. They are light, small, and though they protrude a bit, the bike still fits in the bag or case.