Does anyone have any experience with the Focal 5 3/8" subwoofer, or the new Blaupunkt Plastic (digital) amps? I need small components for my car, an '89 Porsche 928, and would be interested in any opinions as to their suitability for an SQ type system. Also, I see many posts on every -day equipment such as Rockford, PPI, JB, so on and on and on. Let's hear some opinions on the less main stream stuff: Micro-Dimension, Kove, Audison, Hertz, etc.