Advise for 6x9's and Tweeters

[JS00008]

Got 2 DD1508's in my Nissan Titan.. been trying to figure out the perfect 6x9s that will make me get a little more mid bass and highs. got about $600-$700 dollars to spend... any suggestions?

[Supercharged DCs]

How many 6x9s and what will you be powering them with?

[JS00008]

trying to replace all 4 doors and the 4 tweeters... don't really know what amp open to anything really

[Skullz]

http://cgi.ebay.com/POLK-AUDIO-MM691-COAXIAL-6X9-CAR-STEREO-SPEAKERS-PAIR-/380337396198?pt=Car_Speakers&hash=item588de019e6#ht_3277wt_940

http://cgi.ebay.com/SL-6X9-RAINBOW-NEW-2-WAY-6x9-COAXIAL-SPEAKERS-CLEAN-/120605795308?pt=Car_Speakers&hash=item1c14aa63ec#ht_4957wt_954

http://cgi.ebay.com/69C-MAXIMO-MOREL-6x9-COAXIAL-2-WAY-PRO-SPEAKERS-NEW-/110578162247?pt=Car_Speakers&hash=item19bef8da47#ht_3960wt_902

http://cgi.ebay.com/FOCAL-690CA1-ACCESS-NEW-2-WAY-6X9-COAXIAL-SPEAKERS-690-/110568388594?pt=Car_Speakers&hash=item19be63b7f2#ht_2341wt_900

These are some of the ones i was looking at for some time before buying something else, but they're all good choices.

[JS00008]

what'd you end up getting? i've heard good things about hertz. I had been looking at rainbows in the past too but i thought they would take more wattage then 100rms

[Skullz]

The speakers i have in my sig. Yes hertz are some very nice speakers also, i had looked at the HCX and DCX lines but was unable to find any in my price range.