Well i don't want to try to tell people whats the best, all i know is what i've seen. the Redline cost me $120, it works, my mate uses the Redline like most Top Fuel racers use. i was asking him what the colour i could see in part of his Top Bike Fly wheel was he said thats the Redline oil, showed me how it was right through the cases too, said thats why its so expencive. he won't use anything else now.
But m8 not 1 horsepower gain in it i know as i go to the track a lot and if there was a gain in HP i would have seen a faster trap speed, but trap speed was same with redline as it was with Turbo Diesel oil. the turbo diesel oil cost me about $20 at the time and i changed it regular. but up to what you feel good with.