When I “re-entered” the hobby after a 17 year hiatus(I do consider my time between the ages of 5-10 as being part of the hobby) during the first 1 year I was on an exploration. I stuck to conventional, with a focus on modern conventional, postwar, and then prewar(tinplate). During the first 2.5 years I had my favorite RRs(Amtrak, Lehigh Valley, PRR, B&O) But also made many purchases based on an “I see it, I like it, I can afford it” w/o regards to roadname. In year 2, I started to concentrate more heavily on tinplate While also having the objective of getting TMCC followed by DCS- both goals of which I achieved. With that came layout expansion- modern buildings/accessories, adapting to MTH realtrax and Lionel FasTrack- While still keeping a heavy interest in tinplate.
That said- I’m now in year 4 and in terms of purchases, while I still buy what I can, I’ve become much more discretionary- not due to finances but because I’ve realized that I’d like to have cohesion and consistency in my consists and try to keep it as Scale, or at least as proportional, as possible.. I’ve also started to run freight trains(big into intermodal) when earlier I was heavily into passenger. Further, I now focus on a certain time period(as modern as possible) thus passenger cars from RR -A, B, C, D, etc.. from the 30s-60s don’t necessarily “jive” with my Phase III and later Amtrak. Oh, I do still run PRR and LV consists at the same time as my Amtrak, but I don run a consist lead by a B&O postwar Budd RDC followed by an MPC B&O hopper, MTH RK NYC Crane, LTI LV gondola, NYC postwar gondola, RMT Bethlehem Steel ore cars, etc... For passenger- it’s Amtrak Phase III and later(MTH RK Phase IV Amfleet, K-line Phase III Horizons, Lionel Phase IVB Amfleet- the former 2 I run together, the later I donMt intermingle due to Size). Ocassionally, I run my MTH proto 2 PRR S-2 with my PRR 13.5” MTH cars. For freight, basically, I’ve narrowed my focus to scale intermodal Cars that carry containers- not just well cars(K-line bulkhead flats modified to fit Weaver 20’ containers, Atlas front runner, etc...). That said, because my CSX legacy smoke unit isn’t working and since I acquired a lovely MTH Alco LV C628- the LV heads the consist . Prototypical? No. Do I love that snowbird- you betcha.
And of course I still love and run my tinplate, not as much as I’d like to but I’ve just become so in love with the modern bells and whistles. But tinplate is probably the one area in which I don’t exercise discretion-but isn’t that part of a tinplater’s creed?! Although, even there my focus has narrowed, not so much that all my consists match but because I’ve learned more.
In summary, I don’t think any of us but the most lucky will ever not be constrained by something(finances, time, space, and so on). However, when I am least constrained, I like to think that I now make my purchases to fill a need on my layout- for example adding a flat or well car so that I can take a container off the steel beams in my “in the works” intermodal yard and put it on that car. I like to think that’s rational