Well, here are my 2 cents. RR is a good program. Lots of great support on the forum here. CF definitely has looked better in the past and is nice as it has everything in one place ready to go. In my opinion, the elite 2 skin is just as good if not better looking than the CF interface. It is in alpha but I and others have been using it for quite some time and I report no major issues. That being said, there is supposed to be a new release with support for just about everything within the next week or so.
I have never run CF in my car but do run RR and have had no major problems with it. Perhaps once every 2 weeks or so I have a glitch but I think that is inherant in putting a computer into standby 6 times a day or so. I know my desktop at home eventually jacks up if I put it to sleep to much.
I'm thinking your biggest problem with RR is going to be navigation. Not that it doesn't work well but rather which one to get. The available navigation software options has severely dwindled. Basically sygic, copilot and iguidance left and iguidance is EOL, sygic is EXPENSIVE and not really for this application and copilot doesn't embed(some may differ but there was a thread where somebody got official word from dev team that you cannot resize window or something like that). There are others but not very good IMO.
I think it is worth the switch personally. I hope I helped.