Sami Rabia gives iZotope's Ozone 7 mastering suite a 95% in his review for Bedroom Producers Blog.
"Ozone 7 is a flexible and feature packed piece of mixing and mastering software. There isn’t anything I know of that offers as much in one place or sounds as good. For the asking price of the Standard version, you get one heck of a lot of quality stuff for your money and I can recommend it to anyone who wants to do their own mastering."
See full review here.