Been using Speedplay zeros for years and love them. By the way there customer service is great too.
Getting used to them can be a chore, but once past the short learning curve its a piece of cake. They do need to have a short break in period which makes getting used to them a little harder. I think its soooo worth it though. They are a stomp and go pedal that makes it easy to clip in on a hill. They do need to be lubed every few thousand miles, which reminds me, I need to lube mine again. good luck.