I have built, yet never completed, a number of layouts and my six year old would like to build a very simple layout on one of the 4x4 pieces left over from a 4x12 layout I had years ago. I know what he really wants is to make the train go forward/backward, and then have some things to interact with (switches, lights on streets, buildings, etc). I've taken a break from the hobby for a number of years and I've never built an N layout so I am unfamiliar with the brands, reliability, features, etc. A couple years ago I bought him the O Polar Express and he loves the lights, sounds, smoke, remote, etc. But it gets put up after Christmas time due to the size so he wanted to have something year round on a board I already have standing. This is obviously not a professional build and does not need the top end stuff both for price (this is for a six year old) and purpose but I also know myself and as we move forward I may want to keep advancing the layout. But for starters it will be as simple as one can image. My child won't notice the realistic differences between various rail, etc. But he will notice if it can't go round and round or the electric switches don't switch. The catch is I am struggling with which track to go with. My searches are yielding results from well over a decade ago and while things may still be similar I see the shift in standards, etc so I thought I'd just ask. Even if I buy a kit to just get started quickly I'd still like to start with a kit that has the right track so we can expand without wishing we had started with different track. I know this could start an opinion thread but hopefully the background story keeps it centered on the fact that the purpose is to get my six year old involved and engaged (which takes things that move (switches), crossings maybe, make sound, have lights etc) and that isn't a nightmare to deal with. For locos, I like DCC but is there a brand I should lean towards? I'll keep searching as well but I'm hoping someone can read the intent and help me shortcut this process a bit with some recommendations. Thanks!