In my never ending debate with myself about which track to use on my up and coming layout, I found myself with the following question. Can you mix and match differnt track codes togetehr? For example, let's say that I have Peco code 55 flex and points (Allen has converted me to say points now ) and some Atlas points and snap track (code 100?) will these work together? Won't there be a HUGE elevation change from coe 55 to code 100? I would think that this would cause a huge bump on the train and possible derailments. I am thinking of using some snap track on curves and the helix. I like the appearance of Peco Code 55 but the ease of use (and price) of some of the Atlas products. I have almost given up on my ideas of using Unitrack. Yes that nasty roadbed can be hidden to make it look good. But what a pain and wow is it pricey. The points seem to be a good deal though. Any ideas and help would be great. I am currently using Atlas snap track on my test oval. I have used Atlas snap track back in my HO days and I like it too. Thanks Matt - head spinning.