Families of track

I'm looking for a good family of 3rd rail track that looks good under the MN P32(random letters here) for a route I'm making. It needs to have a double track version, single track, and no 3rd rail spline (for crossovers.) Any leads?

As for multitrack splines thay are great for straights, but when a curve of multitrack is joined it tends to make a "whoop dee doo" sweervey of track.
I always use multitrack splines as a track spacing guide on straight aways, and later on replace everything with single track splines.