I started out in 1:24 because of the Delton equipment that was available at that time. Unfortunately it went out of favor and things transitioned to the larger 1:20.3. I still have a 268 that I had to do a lot of work on for better electrical pickup. My Delton Doozie raillbus always seemed to run pretty well. I have a Delton caboose with bad electrical pickup and a couple of the boxcars. Ryan equipment made a 6500 series flat kit in 1:24 and some arch bars with metal wheels. All ancient memories now after moving and abandoning the old outdoor pike.
Dave