Much clearer throughout the entire range, highs ,mids, and bass. Not any louder but I find myself listening to the music louder because there is no distortion. Bass is much, much improved, more "punch". Overall the sound is much "cleaner" , if you will. The new speakers complement the OEM subwoofer very well. I still am using the OEM center speaker though turned down quite a bit. I am also still using the C pillar midrange speakers. Not sure I need to do anything with them. Any suggestions?
BTW- I took the audio shop's advice and used the Stinger Roadkill Fast Rings RKFR6 foam rings to reduce panel vibration and to increase mid-bass response. Available on Amazon for $17. I had already installed Kilmat sound deadening in all four door skins and door panels. I also put in Soundproofing MLV mass loaded vinyl mats under the mats in front, rear passenger, and cargo areas. Sound deadening the doors made a huge difference. The MLV mats seemed to help reduce road and tire noise. Though I have about the quietest all-season tires you can get. All in all, I am very pleased with the results. Going on a 3000 mile road trip in Sept. It will be a good opportunity to enjoy the new setup.
PS- I did use use Metra harness adapters, and Ai HSB524 speaker adapters to install and hook up the four woofers. The Audison tweeters fit right in the OEM rings with just very minor filing to clear the leads.They snapped right in. No hot glue necessary. Look real clean.