I've been thinking about adding saddlebag speakers to my bike but would like some opinions from those who have them. I searched for this info and didn't really get my questions answered. First,do they add anything to the fairing speakers while moving? I'm not one to listen to the stereo while parked. Second, if they are worth having, should I go with the factory bag lids and 6x9's or HMD lids and 6.5" speakers? I've heard the 6.5's sound better but I've heard about quality issues with HMD products. Thanks for your input.