The Atlas models not only look better, but have much better motors and drives. Don’t waste your money on Model Power unless you are buying for a small child who will break it within a year. Same for MDC - they are better that MP (who isn’t?), but not in the Atlas/P2K/Kato/Stewart class.
The Atlas locos are amoung the best made. The current MDC RS3 with the “improved” motor is also a fine model. Basically MDC’s RS3 has a LifeLike Proto 2000 chassis underneath.
Bottom line, you can not go wrong with any of the three locomotives you have listed.
Roger,Looks like you’re off to a find start.I agree with George,I also recommend the Atlas Engines.By staying with the top brands you are sure to come out a winner.As george said,You get what you pay for.I agree 100%
It all depends on how “involved” you want to get. Are you looking to duplicate a certain prototype railroad, or do you just want to “run trains”? Many fine models are out there, some more costly than others. It is true that you “get what you pay for”, But with some detailing and paintwork, you CAN turn an “Athearn” blue-box bargain into a very respectable model. Like I said, it all depends on how much time you want to invest in the hobby.