Good Subs are: JBL, Kicker, MTX, Eclipse, Rockford Fosgates are ok..
Good Amps are JBL, MTX, AudioBahn, Alpine.
Good Speakers are Alpine, Pioneer, Kenwood
personally, i think JBL"z are best amps and woofers, but in my set up, i got Alpine deck, w/ All Digital Audio for my speakers, subs, amps, They arent well known, more luxury type , but badass. And right now, im also working on custom installation of subs and speakers in the trunk.. then later some tweeterz in my plastic things in front ( forgot name

) that are on both sides of window .. but thas my $0.02