My favorite products are the Athearn BB, MDC-Roundhouse, AHM, Accurail, etc. With just a little effort, these models can take on a completely different shine. I really love them.
I am also compiling an encyclopedia, specializing in American-style model railroads. I started in June 2002 and it has over 3000 words. It is in Japanese, so it may be difficult for foreigners to understand. There are also some speculations and hypotheses mixed in, so please read with care.