"Don't get me wrong, LEGO Trains is my favorite line of toys here. But, once normal curved tracks were no longer available to buy separate, I figured that this would be the same thing. NOPE. The first thing I noticed is that the flex-track only makes 1/4th of a circle, which I kind of expected, as a lot of the reviews here had pointed it out. The second thing is that trains derail easily along the flexitrack. I don't even have a powered train, I just run them using my hands, and they still derail. I am befuddled with how shoddy this set is. I would recommend LEGO to go back to the old tracks, as soon as possible. 1/10 stars."