Panther97,
No I did not try to combine the solid and tubular RealTrax, had enough to make the inner oval with the solid. I understand they do not match all that well.
The noise suppression I use is the Block Sound Suppression Ceiling Tile on top of my 3/4 Ply platform, with a piece of inside outside carpet over the tile, so the platform looks like a child like wonderland. It kills the rail sound so dead that my wife ask me not use the building technique on the upper parts of my multi-level layout, she actually likes to hear the trains run at Christmas time, in our living room. I got my old Sound Suppression Block tile for free out of an old building that was being torn down long ago, however Lowes now sells a similar product.
PCRR/Dave