I am also new to this site, though I have had LEGO 12 volt trains for more years than I care to remember. My first LEGO was 7710 which I still have. I also have 7745 InterCity train, 7813 Shell wagon and 7823 container wagon. In 1992 I bought loco 7755 for about IR£13 while in 1995 I came across 7760 in a local toyshop in Dublin and bought it for IR£20. I bought set 4541 in Vienna, Austria.
In the past couple of years I have bought four wheel carriage 7818 and mail van 7819. While I have the aspiration of acquiring and building more stock and infrastructure, my main interest is keeping my 12 volt grey rail system going. When I consider the diabolical pancake motors in Hornby and Lima locos in the 1980s, the LEGO trains were quite reliable giving stalwart service.
I would like to build a 12 volt Irish 071 class loco.