Going off of my personal experince, I can say without reservation that adding the rear speakers made VERY little difference. This is in a vehicle running off of HU power. About all it has done has added rear "fill", which is barely noticeable. I am certainly glad that I did not have to...
Hold up. I just noted that you said you wanted to buy 4 coaxils. I agree with the others ---- do NOT buy two sets of crappy speakers. Buy one set of decent speakers. You are not really going to be able to hear the rear set anyway.
There is an audio shop right there in Waveland that sells Diamond Audio and Memphis. Go by there and give those speakers a test drive. I think you would probably be happy with one of these brands.
I have not heard the DA coaxils, but the company seems to enjoy a good reputation and I would be...
Take a look at BA's website. I think I recall them STRONGLY advising against changing to an active crossover. They note that they have teams of engineers working on designing the system. And you sir, are a certified pimp, not an engineer.
Have you seen Aerosmith in concert lately? I saw them last year and I can tell you that they belong at the top of the list without any qualifiers. Great concert.
I saw the Eagles too. Wish I could remember enough to tell you how it was.