Lots of options out there but I still believe the new Lionel 0-6-0T is the best bang for the buck to come along in a long time. You may still come across a small engine with electro couplers on both ends but they are few and far between. A switch engine has always had the best play value in my mind and one that has couplers you can operate remotely is the best way to this. You can get a conventional engine and upgrade it but you will ending up spending at least twice as much to do this.
To put it in perspective the cost of an ERR upgrade kit to give the features this engine has will cost as much as the 0-6-0T.
Pete
