I think the CR requires a more experienced driver when compared to the B4. Simply because of the set up options available!
When i first got my CR it was ok... Then, after time i moved on to a B4... easier to set up and spares were easier to get trackside... I then moved onto an X-6, then to a Cougar, i didnt really get on with any of these to well so found myself buying another CR...
I love the car, i kept on going back to it as it just seemed so suited to my "local" tracks... Ive now got a CR2, which i swapped for my cougar and ill never look back! Such a nice car to drive! I still have my CR and use it every now and then along side the CR2...
If you get one make sure you read through the set up tips in the manual, it explains exactly what every option does, long and short VLA etc etc...
Once set up properly the CR for me was miles better than the B4... It just suits my driving style
