Alas, my audio system has endured many years of torture and is finally
on it's last legs. My right rear deck speaker ripped recently, and I'm
now looking to replace both speakers and also buy a new head unit. I'm
pretty much set on getting them installed wherever I buy -- I'm not one
to mess with those electrical componets.

Around here (Bel Air, MD USA) the two main car audio stores are Best
Buy and Circuit City. I found that Circuit City generally has more of a
selection and better prices. Any advice/opinions/recommendations?