Proposed 400 bb build, cam recommendations

I'm just kidding, but not.
If I were you I'd pray to the Lord for guidance & ask him to help you decide :poke:.
I have been though the process you're in trying to make up my mind. That's why I'm poking you with that stick lol. You'll get it, you'll be happy.
Personally I'd go with the 470.
After reading all of Andy F's stuff my mind was made up.