The P3 is an excellent plug I ran 1 for like 2 1/2 months last year. P4 of its chilly but I always used the P3. I am going to give the OD 77 and 97T's a try I just bought 2 of each just to see how they last and perform because at my LHS for some reason the OS cost me $11 and the OD cost $5 I have to know. LOL If they dont last close to as long I will go back to the OS. A friend of mine also sponsored by go here, now he runs for GO and EB uses the OD plugs and likes them so we will see I will let you guys know.