440 Source Head Opinions?

I'm sure it's been posted in one of the 200+ replies above, but I didn't see it with a quick scan. Engine masters did a BBM cylinder head shootout.
The 440 Source heads made ~15 hp more than stock 516's,
The Edelbrock made ~15hp more than the 440 source
and the Trick flows made ~15hp more than the Edelbrocks.

I saw that episode, very informative and basically confirms what most of us already know. Stealths are an affordable aluminum copy of iron heads with some slight improvements, nothing more nothing less.