Reply to "Driving to San Diego what O Gauge stuff is worth visiting"

I love San Diego. We travel there for work quite a bit. The San Diego residents may be a little familiar with the aircraft I work on since there was one floating in the bay at the end of last week. 

I have visited and love all the stuff mentioned above. I would also add Frank the Trainman if you like postwar Lionel.  They sell both new and used and have quite a bit packed into their little store.