My vote is for the Crank Brother's Quattro. I just put these on my new bike. I had the candies and loved them (they now reside on my mountain bike) and then tried the Quattro. Easy on the knees and very easy to get in and out of and they come in some cool colors too. I use them without the plastic bottom plate with mountain shoes. I have bad knees so having float and not having to put a lot of force twisting to get out of them was important and they click in easily.
See if you can try both at you LBS