AnyRail. Easy to learn. Easy to use. Has a large track library (EZ Track, Unitrack, Fast Track, Atlas, Peco, etc.). I can test fit layout changes in a flash without disturbing my actual layout. Can handle districts, layers, elevation changes, flex track and other features I have yet to figure out. Many of the keystrokes are similar to any other Windows-based platform, i.e., double-clicking to select an object, shift click to select several connected objects, alt click to select several non-connected objects, copy, cut, paste, etc. Has worked great for me. Jason in Colorado.