Mike, Joe is correct. The new command controlled engines have a lot more features than just moving around and blowing the whistle. You can execute certain sounds besides the bell or whistle. You can also fire the couplers anywhere on the layout, turn the smoke on or off with remote and adjust the sound volume. Bear in Mind that each train manufacturer has there own system and to use all the features for that system you must use there engines. My comments are geared towards the Lionel system because in my opinion it is easier to set up and run and the fact that you have Lionel engines now.
Ron
