I agree with what RTR122 said, but my advice is to visit layouts using different brands. IMHO, looking at photos and just looking at track in an LHS doesn't tell you much more than how much they cost and what they look like. I wanted ScaleTrax and visited 2 layouts that use it. I even bough 10 pieces of FlexTrack and will use it at some point, perhaps on my 2nd level if I can find some O31 curves. Unfortunately, availability is an issue and very few carry it. I think there might as be some issues with some locomotives because of it's short rail height, but don't quote me.
I had settled on the more expensive Atlas that I saw at the McCormick-Stillman Railroad Park over in Scottsdale even though it also has had availability issues. I considered GarGraves, but thought it would be too loud because it's not solid rail. However, I recently visited a layout using GarGraves on a sandwich of plywood, Homasote and cork. It seemed every bit as quiet as the Atlas, so I've decided to use GarGraves and save some money. It's also more readily available and the "Made in America" moniker doesn't hurt.
My point is had I not visited the layouts though, I probably would have stayed with the Atlas and be spending considerably more money. I think AGHRMATT had the sequence right and #3/#4 seem to fit your situation.
