So, other people asked the same thing. I was just wondering..it's been a difficult choice. I definitely won't be doing HO due to my limited space.
I can have a layout about 36 inches (3 ft) long, and 18 inches (1.33 ft) wide. With some more effort I can possibly increase it to about a 7 foot long layout.
I've been leaning towards Z-scale due to the ability of having more space to work with, but they have a lot of downsides.
I heard z-scale trains are easily affected by dust, and I've got an old house that accumulates dust rather quickly. I also heard that unless you place weights inside a loco, it performs badly even if the motor is capable of much more. Z-scale trains are harder to place on tracks. Would I still have difficulties dealing with them (I'm still a teen)? Z-scale layouts are also expensive, and things like premade z-scale decals are nearly impossible to find.
When it comes to N-scale trains, I haven't researched as much. However, I know that everything I stated above would be different. N-scale is cheaper, bigger, and more powerful. With the possible layout size I mentioned, would N-scale trains be for me?