2nd That one!

IMO, either is a total classic and certainly capable of anything asked of them.
I would lean toward the 404 but really, if you are not planning on a LOT of shooting, you probably wouldn't regret either. In reality, both were originally designed for use in a std. length action. The early Jeffs were all on std length actions and I can't remember if I have even seen a 425 on any other action.
In practical terms, there is nothing between the two - not a bad choice to be pondering - maybe one of each!