You do not need to restrict your researches to LGB alone. LGB, Piko, Aristocraft, AMS/Accucraft, USA Trains, Trainline and Bachmann brass code 332/45 mm gauge track are all cross compatible. There might be some variance in sleeper spacing but otherwise much the same. Tenmille also do a code 332 track system but you will need adaptors to fit it with the others. There are also makers of bespoke track elements, e.g. GRS, who use LGB code 332 rail as a basis. Things like Y points and single/double slips, etc'. Max.