I'm sure you guys have the knowledge and experience to realise that TimeSport (since 1987) has been around much longer and has far fewer associated problems than crankbros (late '90s I think), effectively the new kid on the block and a time atac knock off (albeit an imaginative one).
Crankbros is also one of the few companies I was warned against their products by LBS sales people and mechanics.
http://www.timesport.fr/us/home.htm
http://www.mtbr.com/reviews/manufacturers/3421/