The 0-60 launch is the best part! Hahah. I love the feeling.
Growing up in Southern California and being close enough to Six Flags Magic Mountain, Knotts Berry Farm, etc, I've ridden a lot of intense coasters and I can say that RNRC has the smoothest flips out of any other coasters I have ridden. You almost don't even feel like you're going upside-down although you're aware that you obviously are going upside-down.
I love RNRC and Everest and they're both a little intense but I can't really compare the 2. RNRC is intense because of the launch, loops, speed, theme and music. Everest is intense because of the drops, speed, backward drop and theme. The main difference is Everest doesn't go upside-down and RNRC doesn't have any drops.