After a couple of months you'll probbaly want to trade up for some better ones
Out of interest, what is so good about the more expensive SPD pedals that makes them worth an extra £60? I mean they are 50g lighter per pair, but that is next to nothing. The M520 ones appear to last for ages and keep clicking in and out fine, and turning round fine, would I really notice a sudden improvement if I bought more expensive ones?
I'm also put off the more expensive ones because they have cartridge bearings rather than loose bearings, which always seems like a bad design for pedals – the failure mode on cartridge bearing pedals usually involving the pedal coming off the axle, whereas with loose bearings it just gets a bit scritchy and you know you have to put some grease in. Is that not a problem with spd pedals?
Joe