I am looking to start a model railroad. I have limited space. (4'x8') Which scale do you think would best suit an area of this size? Which is a better deal?
I would start by making sure that 4x8 feet really is all you have room for.
Most people who start out thinking about a layout say that, but if we ask a bit more, it turns out that what they really mean is "
if I have to put a big rectangular table in the middle of my room to have a continuous loop of tracks on, it cannot take up more floor space than about 8 x 10 feet (ie a 4x8 foot table with 2 foot aisles on three sides)".
But most people have quite a few other options in addition to building a loop layout on a big rectangular table in the middle of the floor.
Two fairly obvious options you may not have considered:
1) doing a point-to-point or switching layout on a fairly narrow shelf. A great looking and interesting to switch layout can be done all the way down to micro layout size (4 square feet). Which is quite a bit of space for a long and narrow shelf.
Here is a 1 foot deep and 8 foot long track plan for an N scale switching layout:
2) Doing a continuous loop layout on shelves around the walls of a room, either with turnback loops at both ends of the narrow shelves or with removable sections in front of doors and windows that cannot permanently be blocked off.
To show an example of another way to fit a layout into a small room, here is my layout plan - 44 square feet of layout surface with continuous run in H0 scale and a comfortable 30+" aisle coexisting with the use of the 6.5 foot x 11.5 foot room as a storage/tool room:
The room is actually too small to fit a a 32 square feet 4x8 foot rectangular layout table.
So I would not limit myself to myself to the "sacred 4x8 sheet" unless there is some real reason for that. Quite often other alternatives are possible.
If you really want to do a classical loop-on-rectangular-table, or feel that it is necessary to a do a loop-on-rectangular-table layout (it may be easier to sell the idea of "it's just a table that can be put away when not in use" than it would be to sell a layout that runs "all around the walls" to a parent or spouse), then I would recommend going N scale and hollow core door (30" x 6 2/3 feet) instead of an H0 scale 4x8.
A 4x8 means (for most practical purposes) that you have to set aside 8 x 10 feet of floor space to have access to all of it. A 30" x 6 2/3rd foot layout you can reach all the way across from one side (provided there aren't buildings in the way). So it can be left permanently pushed up against a wall/into a corner.
Anyways - examine your available space again, and determine whether you really only have room for a 4x8. Or for that matter - that you actually have enough room for a 4x8 + aisles.
Smile,
Stein