Hi everybody, new member here. I'm just getting back into all of this. Its been about 12 years since I've been involved in or touched any of my trains. My dad and I would setup about 6 trains, most track in and oval/rectangular shape on an 8' x 16' platform. I have 3 engines/locomotives, all Lionel, and a number of cars. After digging through some of the conversations, and seeing different things on eBay, I have a few questions and if you'd take a couple minutes to help me out, it'd be greatly appreciated.
1.) Difference in size/scale: Is there any difference in scale between Lionel, MTH, Williams...etc.? Basically, if you had two box cars side-by-side, would you see a difference?
2.) Mixing manufacturers: Is it common to have Lionel, MTH, Williams...etc. all mixed together on one layout? (I understand one of them uses a different power technology).
3.) Train "scale": When somebody says "scale" or "close to scale", what exactly are they referring to? I understand scales in general, but does this mean something different? (Before this, I've only heard of O and O-27).
4.) Track: I currently do not have any track, all of what I've used in the past, belongs to my dad. So if I'm going to purchase track a) 3-rail or 2-rail, b) fast track or classic Lionel, c) is something better than either?
5.) Diecast cars/trucks: I've done some research and have found a common trend, people using 1:43 cars/pickup trucks and 1:48 or 1:50 for semis/tractor trailers. Is this what most of you do?
Sorry if I've put this post in the wrong location, like I said, I'm just getting back into this.
Thank you in advance,
Mike