I know so many people that have broken Eggbeaters that I wouldn't go for a ride on them if somebody gave them to me. I've even seen a new pair break during a road ride! The four-sided entry sounds appealing, particularly for cross, but any benefit is quickly negated by the risk of not finishing a race on them IMHO.
Conversly, I bought my first set of Time ATAC's in 1998 and that pair is still going strong.