My layout consumes a 21 X 13 room plus an 11 X 3 closet space. The layout has 3 levels with 101 switch tracks, over 100 blocks, 101 engines (100 DCS), 3 mainlines, and 2 subway lines. All engines are on toggle-switched sidings.
All Gargraves Phantom Rail track with all but a few Ross and Gargraves turnouts. 10 TIU channels using Rev. L TIUs. None of the track has had the blackening removed.
All 10's, all around.