Getting ready to order some components. Going in a Grand Am...decided to go with 2 full range 6x9's in the rear and 6.5 comps in the front. SS's or Alpine's? Read good things about both, but does anybody have any comments about the 2? Also, I was thinking about running a SS Ref 4ch to these, but I see an Autotek that matches up pretty good, but does anybody know if the these are effecient? Or are they any good at all?