Animal. That Roxul is fine for some things, but for the most part you want a high density material, at least 3lb per cf like the 703. I was lucky and was able to source some stuff from Ottawa Fibre at $60 CDN for 4 sheets of 2'x4'x2".

For instance, if you want to make a really monster corner bass trap, you could start with a 4-6" thickness of the high density stuff across the corner, and then backfill with something like Roxul.

Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!