I don't agree with that. Sure, annuities have costs, but what doesn't? Mutuals have loads and / or fees regardless of the share type....But yeah, its stupid to put an Annuity in an IRA...
You didn't say it, but I'm still amazed that agents still say "Why would ya put a deferred inside a deferred?"
It's as if the only benefit of an annuity is tax deferral... or more precisely... tax POSTPONEMENT.