ModelRailroadForums.com is a free Model Railroad Discussion Forum and photo gallery. We cover all scales and sizes of model railroads. Online since 2002, it's one of the oldest and largest model railroad forums on the web. Whether you're a master model railroader or just getting started, you'll find something of interest here.
They both make and sell plenty of trains. Big in Europe. Marklin is usually 3 rail unless it is Hamo brand. It will short on 2 rail. On the cars wheels are not always isolated on the axel. You need to know what DCC conversion was used. Is it US or from Europe??
Piko is mostly two rail DC.