I received my PB12-ISD last Friday and have now had a chance to listen to it with several movies and some two and multi channel music. As you can see from the picture below it's quite a bit larger than my 12 year old Mirage PS 12-90 (12" and 90 watts RMS) and weights about 25 pounds more. Like Mac mentioned in his original post I'm impressed with the construction and attention to detail with the SVS. Little things like detachable power cord, rubber tips on the toggle switches, rubberized knobs, and the seemless look of the black textured covering all add to the quality look of the sub. Plus they threw in an SVS pen. Didn't I read somewhere they give you a t-shirt?
Other subs I considered are:
The comparable HSU STF-3, I liked the idea that the SVS has the bottom plate with the down firing woofer and I don't like the spike/legs of the HSU.
The SVS PB12-Plus, it's too big for my space.
The Axiom EP 500, out of reach for my budget but I bet this would sound great with music.
And a used RBH 1010-SE, again too big for my space, a little birdie told me this is a great sounding sub with music as well.
Keep in mind I'm comparing this sub to my 12 year old Mirage....Music is much tighter and punchier. My complaint with my Mirage is that it has a one note sound. The PB12-ISD is a nice improvement in that regard. I was expecting a huge improvement with the SVS when it comes to movies and I have not been disappointed. The Pod Race scene in SWEP I sounds great and the Helm's Deep battle scene in LOTR TT was really shaking the room. I don't have a large room and the PB12-ISD fills my room nicely and matches well with my modest system.
http://forums.audioholics.com/forums/showthread.php?p=26992#post26992
My main reason for this post is to comment on SVS's B stock. I only saved $50 from their normal price and I don't want to get into what's a good value when purchasing B stock items. For me it was a way so save a few bucks, enough said on that. But there are no visible signs that this sub is B stock. The warranty is the same as new so from my perspective it was as good as new. There are no markings on the box or sub that's it's B stock so it won't effect resale value. The SVS website has a B stock page and is updated sometimes several times a day. I started looking for a B stock PB12-ISD the first of July and if there weren't any posted by the end of July I would have purchased a new one. I was checking the site a few times a day and when mine showed up I purchased it immediately. There have been several PB10-ISD's posted lately in different colors. Anyway I hope that helps someone that was considering an SVS B stock sub. Maybe Buck or Mac have some secrets regarding SVS B stock they can share with other members?