They can run well... But do take a bit of work.
1. Pilot chins are too low and catch switches. File these down a bit when installing couplers.
2. The Bachmann decoder sucks, but not so bad as to replace it. These run alone and usually at speed so what we look for in a decoder (slow speed creep, speed matching, etc) does not really apply.
3. You will probably need to re-gage the wheels.
4. You may want to change the headlights which give off a bluish tint. I was lazy and just use clear amber paint from Tamiya.
5. Paint the pantographs red as per prototype.