Four but one pair gets an all-year round hammering!
1. Shimano RT51 with three velcro straps is always my first choice and I just wish I'd stashed away a few pairs. Most comfortable shoes ever and I just love the Ultegra quality PD-A600 SPD pedals.
2. Shimano RT33 with two velcro straps are my back-up if the above get soaked (I don't like overshoes).
3. Shimano RT82 with two velcro straps and a ratchet. I'm keeping these for 'best' but I wish they were RT51's!
4. Diadoro something or another with Look Keo plates... and in white! These were used twice on Newport Velodrome. Nice shoes but I can't see me using them again.