recon

I have my kenwood 9980 set up in my 2011 370 z sport, non bose. Now I want speakers. when I get to hiway speed my stock speakers give up. So now i am looking at speakers either Focal or hertz hi energy 165? I want sound to have cleaner volume. At this point I dont want to add an amp and sub! Which sound the best to you folks who know? I thank you alll for the info and help i have had here!