Compared the specs on my two Optima Red tops today and low and behold they are different. The main battery is a 34R but has a higher reserve capacity and cold cranking amps rating than the other Redtop which is a 34. I believe the 34R used to be called an orange top. What gives? Thought a Red top was a Red top! By the way I have had really good luck so far with these batteries and no complaints.