Complex sentence: It remains a popular choice for hobbyists who enjoy running trains more than they enjoy other aspects of modelling, and collecting vintage O gauge trains is also popular-there is a market for reproduction and vintage style models also.
Split into simpler sentences: It remains a popular choice for hobbyists who enjoy running trains more than they enjoy other aspects of modelling, and collecting vintage O gauge trains is also popular. There is a market for reproduction and vintage style models also.