I've only heard the alpines whch are a good set, but i do own the cdt es620 set which i say are good as well.
I've bought many sets like boson pros,polk momos,mach5 mids, seas neo tweeters, daytons rs 180, which are all good products as well.
i think you should look into parts express or madisound for speakers to your lioking.
right now i'm running aurum cantus 7mids inthe door,cdt drt25 in the pillowed & cdt /vifa tweeters in the door for imaging.
I really do like my front stage more now then before.
I want to go active but i'm not sure if i want to deal with all the x-over points.