Just picked up at PHX, first week of Ultimate Choice. There were agents galore to help customers find a car, even at 9:30 at night. True to AutoSlash's word, the 5 Star cars generally had lower miles and were in better shape than those in Gold and non-member areas.

President's Circle: Cadillac XTS, Toyota Avalon and Camry, Nissan Maxima and Pathfinder, Kia Sorento, GMC Acadia, Hyundai Santa Fe Sport and Sonata, Buick Envision.
5 Star: Kia Sportage and Optima, VW Passat and Tiguan, Hyundai Sonata, Nissan Sentra and Altima, Chevy Cruze, Ford Fusion and Escape, Jeep Compass (old style).
Gold: Chevy Malibu and Cruze, VW Jetta, Mazda 3, Nissan Sentra and Altima, Kia Sportage and Optima, Jeep Renegade, Hyundai Sonata and Elantra.
Premium Upgrades: Infiniti Q50 and Q70, Mercedes CLA and C300, Audi A4, Cadillac XTS.
Compact, Midsize and Full Size were class typical selections.
Other interesting finds: Nissan NV cargo van and Toyota RAV4 in Midsize, Dodge Charger R/T in Full Size.

I first took a loaded Ford Escape Titanium with 4K miles, but found out it was checked out by an employee. Was about to take a VW Tiguan with 3K miles, but ended up taking a Hyundai Sonata Hybrid with 9K miles and active XM (gotta save on gas). So far, I'm liking UC at PHX. There was plenty to choose from.