I used NuFinish for years. Much better than Meguilar or Turtle wax. Saw a recent test comparison over a 6 month period of all the major products and Zymoil tested out tops. I've used it and it does produce a very fine sheen and finish. Unlike many products, Zymoil wants a quick on and off process. With Nufinish and many others, people often put the wax on half the car and let dry to a white haze before removal. I haven't used Zymoil long enough to compare the long term reliability. I usually was often enough that it really doesn't matter. I tend to still like Nufinish only because it removes the issue of getting the wax on and off quickly.
Ken