I've got a Phatnoise Phatbox and love it. The integration is great, as is the quality. I've had and loved the Empeg as well, but the Phatbox really makes sense if you don't want to carve up the dashboard of your expensive car. Having all the MP3s I want invisibly inside my BMW is great.

Treason, treason, I know. No flames, please. Just being honest....