I switched from the Look system to the Speedplay Zero Ti about 2 years ago. I find it much easier to clip in and out with the Speedplays and have no problem with hot spots. As far as maintenance, I clean and lube the contact area on a regular basis (takes 5 minutes) and every 2,000 miles or so they need a major re-lube (took mine to the LBS).

It took one or two rides to get used to the increased float on the Speedplays. I got the sensation that my feet were on ice at first, especially when standing. But that didn't last long.

Love mine and wouldn't even consider switching to another pedal system now.