I bought and returned some Candies a couple of years ago. Why? No wrench flats. I want my pedals to have at minimum wrench flats, and preferably, both those and allen key hole. Over the decades I've been riding, I've just seen too many pedals get too tight in there, even when installed properly in the first place. I want those wrench flats as insurance, because that little Allen key hole isn't going to be very useful if things go wrong some time in the future. If a pedal maker cheaps out by not providing something as simple as a wrench flat, they don't get my business.
Other than that, I think they work reasonably well as an SPD-compatible type, although mine required playing around with shims to get the feel right, something that my Shimano SPD pedals don't need for my Shimano shoes (some Time touring shoes I had also required shims with the Candies).
Last edited by Longfemur; 04-29-09 at 03:38 PM.