There are "Animated Loggers" on the DLS ... They help you chop down that tree :hehe:
I like 3' NG, as most US NG RR were that gauge, for most locomotive manufacturers made either 4 foot 8 and 1/2", or 36" equipment as their main standards. There were custom exceptions though.
What I find frustrating is, that there are so many hundereds of fatastic NG loco's and rollingstock, in all the other gauges ... that once you build a prototypical East Broad Top RR, or Wopsononock RR in 3' gauge ... you miss out on all the 12", 18", 24", 32", 40", 42" loco's and rollingstock.