I've been running about 40 Atlas turnouts, using under table motors and Caboose Ind ground throws, for about two years and haven't had ANY problems with derailments (unless of course, I forgot to throw a switch). I find them to be adequate for my needs. I also have a few Peco turnouts. If I were to start ALL over from scratch I might consider buying all Peco but a new layout is going to cost me plenty without being able to salvage the turnouts from the old one.
I may regret it down the line but so far I find Atlas quite reliable if you are very careful lining up your track and not nailing them down so hard it pulls them out of gauge.
I may change my mind as I move forward, talk to more folks, and finally win that lottery.
I mean, I drive a Dakota truck, not a Toyota fer Chris' sakes, and I'm happy so far.
Fred