Where to Put CPU_FLAGS_* ?

[flysideways]

The current handbook has CPU_FLAGS_* going into a package.use file, the wiki make.conf page says either make.conf or a package.use file, people posting their make.conf's in fgo are still using make.conf ...

Is there a benefit to CPU_FLAGS_* flags being in a package.use file over make.conf? If so, what would it be?

I've spent a few hours looking about for this and am missing it, if it is discussed somewhere.

Thanks.

[rab0171610]

I don't think it is worth all this time and effort tying to find an ideal place for it. You state you spent a few hours looking for an answer to whether or not there is a benefit to putting it in one place or another. Per:
https://wiki.gentoo.org/wiki/CPU_FLAGS_*