I am in possession of the 2037 set. Running wise it runs reliably and consistently. The smoke unit quit working the second Christmas that it ran. The whistle and bell still continues to work properly and it is what it is which is a simple sound system. Lighting is good and continues without issues now for four years. Simple oiling and maintaince will keep this loco running for many years.
A note on the Suethe Smoke units is make sure that you use the proper Smoke Fluid as any others will clog up the unit and make it not work at all. To replace the smoke unit is relatively easy and the cost are the cheapest on the market for under 10 dollars each compared to the fan driven units that are produced by other manufacturers. I have only used the Bachmann smoke fluid which is recomended by Bachmann. However I have heard of others that have used J T Megasteam with good results. If you wish to upgrade a smoke unit in this locomotive there are two options for you 1.http://www.mttponline.com/ This fellow has worked on modifying a Lionel fan driven smoke unit to fit and work in Bachmann Steamers. Another option is I have test fitted a smoke unit from an MTH Imperial Big Boy. with a minimal amount of work you can mount this unit in the Boiler shell. this is in case you would want to upgrade the engine to the MTH Protosound command control and sound system.
The only problem I have found with the tender in this set is that there is a possibility of one of the little locks that are in the Tender Trucks can come loose and fall out. I have had this happen and had to replace the entire Truck due to the fact that the little locks are not produced singly, the only way to repair this is to replace the entire truck assembly.
The headlight in the engine is bright and has worked with out issue for four years now. Now with that said I bring out the sets on occassion during the year and set them up and run them hard and long from October to January, during the Christmas season. During this time My display is run approximately 8 to 10 hours a day for at least 6 days a week. The display is constantly in motion and visited by the neighbors kids almost every day.
As to the E-Unit: The E-unit in this is an electronic one and has never given me any trouble for the entire length of time I have owned this set.
This set is a delight to the girls and they take it to heart when they see a Pink train running I also add a Barbie Doll to the Gondola to please the Girls.
The set is well produced and is a reliable running set the only weak links are the ones mentioned above if you keep a few smoke units on hand or do one of the smoke unit upgrades, and treat the tender gently without dropping the unit on It's Trucks, Then I have no doubt that you will have many years of fun with this set. As I have had. I am planning on picking up at least another 2 sets for my two nieces which will make me 5 Girls sets Total. I have One 1991 Lionel Girls set/Williams Girls Steam Set/ Williams Girls GG1 Girls Passenger Set/ and I will be picking up 2 more Steam sets.
Nick if you wish any other information or if i can help in any way shoot me a message and I will try to do my best.