I have the 2 rail PS2 version. I think it's a fun little engine to own. Mine run great and goes over my dead frogs on the Atlas 2 rail switches without issues. I pair it up with an F unit and they will pull as much as the bigger ones. That's without tires.
When I got it the battery was dead and I charged it overnight. It has run great ever since. The PS3 version won't have the battery.