LGB was bought by Märklin, so their trains should be available. Also to remember...or realize, there is no such thing as G scale. "G gauge" would be more appropriate, reason is the track is 45mm wide, but different manufacturers took different approach to actually scaling their equipment. Originally LGB models were based on 1000mm narrow gauge and are roughly 1:24 scale. Once American manufacturers got in the game...sorry to say, but they created cluster f..k. Their equipment ranged from caricature standard gauge running basically on narrow gauge track to 1:22 or even larger scale narrow gauge, all running on 45mm track. Piko unfortunately followed the same path and is basically making caricatures of standard gauge equipment roughly 1:29 scale running on narrow gauge track. LGB also made some caricatures like that later on. True standard gauge cars and locomotives running on 45mm track are made by Märklin, it is called 1 gauge/1:32 scale. The true 1 gauge stuff tends to be expensive, Mārklin being the most cost effective. Other true 1gauge manufacturers are KISS, KM1, MTH built couple of models of American locomotives, and other not very well known firms outside of Europe.