I personally hate my egg beaters, I only keep them in case I want to do a cyclocross event. Way too much float, and the metal/metal connection feels like butter when wet (which is bad here in PDX). After 3 accidental unclips I switched to KEOs. Walking in them and putting the cover on is a slight inconvenience compared to coming unclipped. The Keos are very secure and the float feels correct (which can be adjusted based on which cleats you use), the tension is adjustable.

I have no knowledge of the Time Atac, but if I had not invested so much in my Keo/road shoes I would def consider giving them a test run at my local LBS.