Okay new in train sets, I have collected over the years lots of 1:50 and 1:64 scale equipment ( construction and farm, ect.) Now have a son coming along and he likes trains. Wanting to set up a train layout and incoporate my toys ( I'm the big kid here @ 36) with his toys. The part I am having problems is deciding on the best layout. Have a small ho set set now but want to go to O scale for the size comparrisons. Trying to get some input on the pro's and con's of full O compared to ON30 and which has more operating car and working fetures.