I have been installing since I was 14yrs old...Now I am 26 you do the math cuz I am tired. ANYWAY... I have worked in stores and out on my own. Currently I have a 99 Rodeo and the best speaker selection I have found was from
Memphis Car Audio. In my rodeo I have
Memphis M-Class 5.25 Multisync Convertible speakers in the front door, M-Class Co-Axial 5.25 in the rear roof mount, 1 Memphis M1 DVC 12" sub in a sealed box. I am using the Memphis "Baby Belle" 5 Channel Amp running it all.. Up front I have an Alpine 9857 HU.
I am looking into doing some Multimedia stuff for the people in the back...But back to topic
My setup is a little pricey for a factory replacement.. BUT Memphis has a line called Power Reference that is awesome.. For the price you pay you will get soooo much more in return sound wise for the speakers...I can personally attest to the Pow Ref Co-Axials and subs...They are great equipment at an affordable price...
Hope this helps...