Not many mentions for SoCal here. DSS in Carlsbad are very helpful and happy to let you demo whatever they have whenever you want, Stereo Design in San Diego (though they won't 'haggle' much) with a very nice store and no pressure, and Weinhardt Design in LA. Although he sells a very high level MBL inventory, Mr. Weinhardt entertained me with an otherwise modest budget and provided excellent after sales service.
All in all I think most dealers have realized the days of "I know more than you do" sales and name-brand elitism can't win over the values here on the internet. I always try to give them my business over the 'demo at the dealer and then buy off the internet' if they are decent sales people, and they usually come through with the traditional long-term sales and customer appreciation.