Get the R200c NOW, before it's unavailable forever. And it's on sale.
What about your current receiver doesn't work for you? Are there features you need that it doesn't have and if so, which ones? How far from the speakers are you and how loud do you like it to be?
I'm 12-13 feet from my R500's (right now in fact, listening to Go Go Penguin) and my NAD T758v2 is just great. Looking forward to Dirac Live before the end of the year, as funds allow for the AM230 upgrade. The T758v3 comes with it.