Thanks guys for the information. I'm going out locally tommorrow to look and compare. Have a batteries Plus store here that carries the Optima and also have a Interstate Battery location that carries them. I will also look at the Interstate batteries since I think they are a good product. One big thing going for the Optimas is that they now have a 3 year replacement warranty where the Interstate has 1/2 that amount. I don't think that is a big thing since my OEM's have lasted almost 3 years and the Optimas and the regular Interstates are better batteries. Again thanks for the info. I did find a internet site Battery web. com that has the Optima 34 Red tops for $99. 00, anyone use them?