It follows that, all else being equal, I will get as much XP doing floor 1 with a prestige of OSRS gold 9 because I did the first time I did floor 5 using a prestige (current advancement ) of 5. Similarly, there is scarcely any reason to ever redo a floor and choose the"zero prestige" penalty. If you think about it, you're always better off to save advancement and begin over at floor 1, because...