I like my SPDs and am happy with them. I don't skid but I can resist very hard on them and the couple skip stops I've done for ****s and giggles they haven't come unclipped despite the tension being only set to about mid level. I would think that if you keep your feet straight you wouldn't have a problem with these.

That said, most people who've tried both seem to prefer time ATAC and if you're into skidding I can see most of the arguments about ATAC being superior making a lot of sense.