Love my Speedplay Zeros! I switched for the double-sided engagement. I really like that I can adjust out some of the excess float on the inboard side while keeping more outboard float.

Like others have said, the first few rides on new cleats can be tough to clip in. But they get significantly better after that, IME.

I lube the cleat springs maybe once every few weeks. A little Triflow or similar after a ride does the trick, and it only takes a couple of drops.