I just got an 07 convertible without Bose and without Nav. The stock stereo sounds pathetic - terrible and weak. I went ahead an ordered an aftermarket double-DIN Kenwood head unit that has blue tooth audio streaming and an auxiliary input so that should be good for my iphone and ipod. I'll put that in and then check the sound again - if it's still poor, I"ll upgrade the speakers. any recs on good speakers that fit? I checked with Crutchfield and entered in my car's info and there were many options - although I'm not sure how accurate they are when they say that they 'fit'. Are infinity's good? polk? ones to avoid? Thanks in advance.