bowglie, how tight do you/did you have your spd's!?
My first experience was buying a bike fitted with spd's from my cr@p LBS (I won't mention the name, it does have the worst reputation in the SE). The pedals were set up so tight, and the cleats weren't even the same brand as the pedals! Anyway, I crashed and literally couldn't realease my foot, I had to remove my shoes with them still atchached to the bike, and by hand wrench them round until they released. Needless to say I hated spd's from then on. It took nearly five years to return after trying, Time, and other pedals almost giving up, until I went back to spd's once again. This time using Shimano, with the multi-release cleats, and the tension backed off as far as possible. And the cleats set correctly for my knee ailments, hey presto – I love em, no knee probs at all. Of course, once I wore out the multi cleats, I bought standard one's and all's been great for the last five years. I have to buy shoes with no insole bias though, and I set the cleats at the same slight angle with every new pair of shoes. It took five years of trial and error to get there – I wouldn't go back to flats.