I got the stock speakers on my 02 sierra SLE and my speakers are kinda going out. I am looking for better performance speakers that really make a difference in the base and overall quality. Im looking for speakers that add bass with out having to buy a seperate bass itself. My sister has a pontaic g6 (2007) and the speakers and bass are incredible and they're stock as well. I do know that it is best to buy speakers with the same brand as the head unit. I Current have a JVC stereo but plan on upgrading it to a higher quality. So with that being said. For those who know alot about speakers and qulaity, which brand or type do you recommend. Price is not quite an issue at the moment. Thanks!