Hi...I use a combination of Atlas flex track and Peco turnouts on my layout....and couldn't be more pleased. I had used a mish-mash of everything in my previous layouts but decided that for the new one I would only use Peco turnouts. I haven't had a SINGLE problem that I can attribute to the turnouts. As for their flex track...I haven't any experience with it, but if it's as good as their turnouts, it should work as well....BTW...I use Code 100.