This is Jack from CDX Blocks. We make the Cyclone roller coaster kit. It’s going to be difficult for me to discuss our set without it appearing like I’m degrading the competition, but our system is light years ahead of what is available from Lego or Brickcoaster. For starters, we have 4 precision machines stainless steel wheels on each car. This allows the train to roll equally well upright, sideways, and upside down. Plus, the metal wheels in a Delrin housing give unbelievable efficiency. If you were to see the system in person, I think it would be more obvious. Do you have monthly meeting? I would be happy to send a kit to someone to build and show to the LUG.