I just noticed the new Pioneer Stage 4 line on the Crutchfield website and they are very expensive for anything pioneer that i have seen. I have a Pioneer Premier headunit (cant remember exact model) and i love it, it has all the features i could ask for so that is so different about this new HU and the new speakers? According to pioneers website they are an audiophile grade set. does anyone have any experience with them and know if they are worth the money?