All, just got a new 2021 grand touring cx-5 with the 10-speaker Bose stereo. I think it’s ok - but could use upgrading. However, in reading posts pre-2021, it sounds like there are challenges with Bose playing well w add-on speakers. It’s the quietest car I have ever owned, but is there value in additional insulation in the doors? I’d like to keep the head unit, but interested in options with or without additional amplification. Any initial thoughts?