I've been in the building trades for about thirty-five years. For several years in the upper echelon of neighborhoods where money wasn't ever an option. I've worked for dignitaries, TV personalities, Pro Athletes, People on Forbe's list etc.
Up until a few years ago, all of the guys around me have been using Hitachi 8" sliding compound mitre saws. Some of them have since updated to the ten inchers.
Unfortunately, about three years ago, Hitachi changed their designs to pure JUNK. Now when they have to replace them, the "boys" use mostly Makitas. I was told by the guys at the world renowned "Hartville Hardware" to keep mine and rebuild it. And if I ever want to sell it...
I have no experience with Ridgid Mitre Saws, but I have several other Ridgid tools and they have all held up extremely well and I would buy them again.
Good luck in your search!
Jon