Here's the new stuff that people here may be interested in:
EMF SWAG 6.5 coax's. They are marine grade so they can also be used on a boat, golf cart, ATV, etc. http://www.emfcaraudio.com/emf-audio-swag-6-5-coaxial/ $150 a pair, now in stock. I spent A LOT of development time on these things...