I'm going to be receiving the Pinnacle Digital Sub 350 within the week from a friend and I was wondering if anyone had any opinions on it (or it's replacement the 600). It's a sub with dual 12" drivers in an isobaric configuration. Here's some manufacturer info. I've read good reviews of it, but have yet to find many people who have it as opposed to other subs. Anyone here have it or heard it? Thoughts? Comments? Whatever? Thanks.