CF line is much brighter sounding that the RC line. And yes the general consensus is to get the RC because they are built better, use better drivers, handle high volumes better and sound better.
While you can get the CF towers on sale (particularly the CF-70) for less than the RC towers, the CC center and CB bookshelf speakers cost more right now than their corresponding RC center and bookshelf brethren. So its even more of a no brainer to get the RC.
The RC's are clearly the better all around speakers.