UPDATE: I purchased the 12'x24'x54" Diamond Star (Wil-Bar) from www.sunenterprises.com. Purchase went very smoothly. I figured out how to get their Web shopping basket to work (click Back button to order additional items), but decided to talk to a human before sending ~$4,500 total.

I was a bit disappointed to find their Sandstone and Ultima models are made by Artisan but the Diamond Star is made by Wil-Bar. I was also bummed to hear the warranty is prorated... but when I checked it has lifetime warranty on pool walls. (I wonder how they prorate lifetime :-)).

Overall I'm happy to move from the research-and-purchase phase (took me >1 year) to the construction preparation. I'll be re-reading lots of construction posts and preparing my site this weekend and next weekend. (Level, level, level.)