For Garden railroaders, what d'ya feel are the pros and cons of ground level versus raised track? I'm starting an SM32 (i.e. 1:19 16mm scale) garden railway, and would prefer to have raised track - but would like to hear the arguments! As some of the locos are live steam, I'd like to do the raising of steam on a higher level to aid in the various adjustments to be made! For those choosing raised track - which system of raising the track bed is best?