440 REAR MAIN CAP SET UP

Before I go out and spend money on this what is the best cap and seals to use-I have read some articles on hear and everyones idea is the best one but what is the real best one? Orange seals,rope seals,silicone...

Not once, on ANY BB, have I ever had so much as a one drop of oil leak by using the stock cap, FelPro seal, and RTV. Mind you, these were all with factory cranks. Your mileage may vary...