i've got shimano A-530s on one bike, and forte campus pedals on another bike (both are combo SPD/platform pedals). i've had both for over 3 years now, if i had to pick one over the other, i'd go with the forte campus pedal. it's every bit as good as the shimano one (even a little better because it's lighter) and half the price.

in general though, i'm a HUGE fan of combo SPD/platform pedals. ultimate versatility.