Hello, you will like the weather here in Vegas, 70-75 degrees, but maybe not the 2 rail selection. The best O Gauge/O27 (mostly 3 rail) is the Train Engineer on Chandler right by the airport (very small but packed to the ceiling), the next is a train store on Durango south of Sahara in the west end of town. Pickin's a little slim in Vegas, I don't know why, everybody that lives here is from somewhere else that has trains. I think I may be the last native left.
Email me at my email in profile and I'll buy you breakfast.
Chris Sheldon