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, or maybe 906 head?
The Edelbrock made ~15hp more than the 440 source
and the Trick flows made ~15hp more than the Edelbrocks.