Rust Bullet or Por-15 or ???

[drunkbus]

Looking for some input on Rust Bullet or Por-15 or any other products anyone has used on their frames. I have done some research and Rust Bullet looks like it requires less prep but only comes in silver, so I would have to go back over it with some black, but Por-15 sounds like it will fade if a top coat isn't applied, so it sounds like they would both be about the same for application but less prep for Rust Bullet. Any info from personal experience would be appreciated.