I'll admit, I'm jaded. I've gone to great Brazilian places. Plataforma, in NYC, is amazing. There are several others, as well.
But Rio Rodizio was good, and for Union County, I'd say it's a value. It's not too expensive and the food is value fo the price paid. Not inexpensive, but not out of a reasonable price range. Food is about what you'd expect for the price and service is excellent.