Funny, I used MB Quart's exclusivley for all my cars systems for about 13 straight years, just recently switched to try something new. MB's are getting cheesy looking in recent years, and they started sounding too bright and harsh to me. I'm happy with these Diamond Audio's.i used to use these diamond audio components http://img714.imageshack.us/img714/9733/tmpphpo6qf9x.jpg but i switched to these MB QUARTs http://img210.imageshack.us/img210/8829/tmpphplngxc9.jpg because the sound quality was so much better but maybe the hex series is on par with the quarts.