I don't want any of the rear window blocked. I'm not looking for the hardest hitting sub. I'm looking at 2 of the Alpine swe-12s4 because they're cheap vs 2 sa8v2? Which one of these would hit deep bass better? I want full sounding bass in a small space. I don't want it sounding like a single cab pickup with 2 shallows if you know what I mean?