Both are stunning models. I especially like the riding car behind the rocket. One of our local live steam members recently purchased a 7-1/2" Mogul, runs like the proverbial Swiss watch. Expensive though, north of $20K. Our club owns an OS Porter I think a 2-4-0 in 7-1/2", which suffered some freeze damage a few years back, now repaired. That one was actually donated to our club by OS when they visited our club track.