Since the purchase of the El Conquistador Courses, the Town of Oro Valley and Troon have made a huge improvement in terms of the quality and ratings of the two courses.
According to Golf Advisor:
The El Conquistador Course and La Canada Courses have improved from a 76.8% rating in May of 2015 to a 93.7% now (last 12 months). The courses have an “all-time” rating of 91.6%.
Use the slider below to see the difference between 2014 and 2017 (Google Earth Images):