I said none, because honestly once I hit somewhere beyond level 18 or so, I find that I have increasingly lower and lower adherence to the 'rules' as it is anyways. Plus, for truly 'epic' creatures, be they gods or archfiends, I've never seen a system that could accurately quantify them, and indeed I'm not certain that such beings can be, or even should be, quantified, pinned down, reduced to numbers, and defined down to their last skill points. A full stat block puts limits on such beings, and honestly such primordial beings should be antithetical to any idea of 'they cannot do that because their stats don't say they can'.
But also, in my opinion and in my experience, a lot of 'epic' games that desire strict adherence to 'the rules', and try to judiciously define gods, archfiends, etc with massive stat blocks also tend to rather quickly devolve into hideous avalanches of numbers, A-Z god killing frenzies that'd put Waldorf to shame, and other such things that really do a disservice to the flavor of it all.
In dealing with such topics I have a much looser take, giving more fiat and leeway in what truly epic creatures can do. I don't like to limit and define them, it just makes them big monsters for big PCs to kill and loot, stripping the wonder and mystery from it all. Now this may be right up some folks' ally, but it's something that leaves a bad taste in my mouth.