"Besides NOT getting the heavy price tag, you are also NOT getting the extremes of envelope-pushing performance, especially in terms of the extreme low-frequency output you may get from more expensive subs populating the marketplace. The LSP12 certainly has its limits, but within those limits, it performs quite well."
After reading the review, I completely agreed with the author's above comment. My thought is, buy the best subwoofer you can afford. If you can't or if you are looking for a budget subwoofer, the Lavas or the Bics will do. Just do not expect mind blowing awesome bass from these budget subwoofers. IMHO, they won't be able to blow away any $800+ price subwoofers from other ID companies or DIY subwoofers in those price range but they are a great buy at under $300 with AVS discount.