WOW! This thread kind of went off topic but CW topics usually do . Okay look. I probably never would have went out and purchased a CW-80 if it had not come in the Polar Express set. Still, I have had good success with mine so far. From what I understand Lionel has and still is making changes to the CW based on customer complaints. An external circuit breaker would be great, a beefier fan would be nice as would the ability to run all MTH trains....but it is still a starter transformer. The PowerMax transformer that comes with the Nascar set was designed by Lionel as a introductory transformer. A way to get a train set into homes that otherwise wouldn't have one based on the theme and graphics of the train and rolling stock. The PowerMax will power only the train and cars included in the set and NOTHING else from what I understand (makes you wonder why they call it PowerMax ). Alot of you seem to really hate the CW and thats fine with me. All I wanted to know and was hoping someone could answer my question as to why it outperformed my other transformers of more wattage. I still don't have the answer so I guess I will just enjoy the fact that it does. Hopefully Lionel has people who roam the net reading these posts and forums and will listen to everyones complaints and do something about it. There customer service and reaction when I told them I was having problems with the fan on my old CW was first class and fast, yet I wonder if the one they sent me to replace it has any design or circuitry changes? Hmmmm.