Thanks everyone... I am feeling pretty good about the Zeros. A couple more questions...

a.Is the "Wear Protector" shim that Speedplay offers a worthwhile investment?

b. How long do cleats last?

c. Finally, I am going to have my LBS install the pedal system. I understand that set up of the cleats can sometimes be frustrating and there are differences of opinion on adjustment/tightening of screws and so forth. Is there anything that I should communicate to or request of my LBS as far as the installation?