This article is from the Car Audio FAQ, by Ian D. Bjorhovde (firstname.lastname@example.org) with numerous contributions by others.
Generally, Alpine, Clarion, Eclipse, McIntosh, Phillips and Pioneer are
considered to produce good quality CD head units. They all have their
problems, but these brands seem to be common and relatively
Bad brands include Kraco, Radio Shack, Rockwood and other "bargain"