I have not had a layout since the 70's. I got suckered back into trains when Williams started producing brass engines. I bought them and then the passenger sets. Then Weaver started producing brass engines. I bought them and then the diesels and then the E-8's and then the passenger sets. Then Mike blew the roof off the hobby. Then the Challenger brochure came and there was no way not to buy that engine. In the hobby line of trains there has never been anything like it.
Ok, it was not a good idea to think that you could go through the History of MTH book and check off everything in the Premier Line but it was worth a try. I have to say that owning an ABA of every F3 in the book is cool. My real problem is that I get curious. Williams made a huge contribution to the hobby when Lionel was not doing much in the late 70's into the 80's. So, I tried to get one of everything he made (except prewar) starting with the Aluminum and Madison cars and the E-60 up through the four motored F7 Santa Fe in 1990. Unfortunately he then produced everything I could not afford as a kid. You can probably guess the outcome of that catalog purchase.
Recently I have been curious about K-Line. I bought the book. I have come to admire the determination he showed in building his company. To start with Plasticville, Marx, add Kusan and using internal talent to create the company he did was a huge achievement. I am not sure he, Mike or Williams could pull off building their companies today. Anyway I think the early strength in Maury's company was his sets go I am buying them plus the cool little cars and stuff that had great play value.
I am not going to try and claim that any of these purchases were rational but they satisfied my curiosity and have given me endless pleasure of the chase and countless hours of enjoyment looking at them. Will any of them ever get off the shelf. Who knows?