Work In Progress..
- '18 CX-9 Signature
I personally would opt for the Turbo. It sucks to lose the ADD, I have it in my CX-9 and absolutely love it, but the turbo and the LED headlights and taillights are substantial upgrades. Plus, even if you lose out on the OEM Bose audio, it is possible to upgrade the speakers to a better system down the road. You can't really do that with the engine or the headlights/taillights (or maybe you could, but it would be pretty expensive). I also don't really care for ventilated seats, though I've read that Mazda's ventilated seats work really well.