I was also at the Gold Cup with Capt this weekend. Ended up TQ and winning the Superstock class and was BQ in mod. My first impression was very positive even with brand new tires. As the tires wore in it was like holy steering batman! on power off power...didnt matter. Mind you I am running a full pack and rtr weighed 60.2oz with no added weight anywhere. Most people were running full packs and went to white front springs and gold rear to tame the car a little. 37.5 frt oil and 30 in the back is a good place to start. Most of my runs I could get through the 6min without hitting my lid once. Car seemed to be easy to drive and make small mistakes correctable without rolling over. (except my mod BQ run....2 self inflicted wounds followed by another drivers blowup took me out) But all in all, great car and yes it is better then the rb5. (IMO)