I would steer clear of the new course at Reflection Bay. You will hit a shot right down the middle and get down to the fairway and realize your ball rolled into the desert. On a lot of holes the fairways slope towards the desert. The course is always in great shape, but not one of my favorites at Reflection Bay. Tuscany isn't anything special, all I would say is it is a new golf course, it is green. In regards to Cascata, the course gets a lot more play then it used to since they lowered the green fees to a bargain rate at around $250. The course is always in great shape, and everybody that plays gets treated like Kings and Queens. If I had a choice of play in Vegas I would play Southern Highlands, Rio Secco, Canyon Gate Country Club, Red Rock Country Club, Shadow Creek if you haven't already played, Spanish Trail, Bears Best, Badlands, TPC, etc. Paul if you need any help with golf in Las Vegas, let me know.
Good Luck,
John