Finally made the switch to SPD's yesterday, and bought some Shimano PD-M520's, these I thought were an absolute bargain for £19.99 online, and also a pair of Shimano-M063 shoes, low budget stuff but ideal for me as I didn't know if i'd take to SPD's or not. After fitting these to my Rockhopper, I was a little nervous after hearing all the horror stories out there, but touch wood, I havn't had an SPD 'moment' as yet !! I was amazed at the difference they make, so much more power to your pedalling, I love 'em. Almost came a cropper yesterday when trying them out for the first time, as I was slowing down to stop I got my right foot out okay, but while I was still moving tried to get my left foot out and couldn't....Panic stations !! lol..I was okay though...managed to get it out at the last moment...phew ! I've now got it weighed off and just get my right foot out each time I stop Fingers crossed for the next few days !!