always remember to google.com your items to make sure you got the best price, than once you find a price, check the site that comes from, all of the above are legit but they almost never have the best prices, the only way to truly get best prices is to mix and match stores. i bought each item for the system im working on right now from at least 7 dif places. :| I use sonic to find parts but the only thing i realy buy from them is cables and wires :|
knukonceptz.com caraudiomix.com (maybe) caraudiodeals.com hifisoundconnection.com the store on soundsolutionsaudio.com there are more too. cant think of them though
i would buy my equipment from onlinecarstereo and i would buy my wires from knukonceptz.com. That being said, I WOULD NOT buy from sonicelectronix.com. there freaking expensive compared to onlinecarstereo. i would just use the other sites to look up info on the stuff you want to buy. onlinecarstereo is sometimes not the best place to find the information you want.