What kind of Brand of Car Speakers would you recommend that are 6 1/2 that are a great brand?

I've had good luck with infiniti speakers myself. If you look at online stores like www.ikesound.com or www.etronics.com you can get a good pair for about 50 dollars.

get rid of the audiobahns, get kenwoods, alpines, or infinity. these are the best for a good price. try getting two or three way for the best quality. even try a component set, this will come with a seperate tweeter, very nice sounding. but if you want the best, heres a secret you cant get in stores. go with bose!!!! nissan has 6.5 speakers in the front that are the best, you can get these speakers at nissan dealer or even the junk yard. i got a complete set of component speakers (4) at a junk yard for 150.00 and they rock!!!!

try buying some Infinity Kappas or MB Quartz (any series of MB Quartz would do)f. They produce really good quality, nice and clear. It is a bit pricey but worth the quality.