I went opposite to you. I started off w/ SPDs and switched to Candys b/c of the extra float and the lack of a tension screw. Once the cleat wears a little, it was easy to accidentally unclip by pulling up. You either had to tighten the screw or replace the cleat. If you pull up w/ Candys, they lock in tighter so less accidental unclippings. Accidental unclipping is not usually a big deal unless you're accelerating/sprinting or doing a fixed gear skid, both of which I was doing when accidentally unclipping from SPDs.