A couple of additional comments.
I have a Porsche 911, which I bought second hand, which had been delivered when new in 2008 with an "expensive" Bose sound system. I find it pretty un- impressive and at times really harsh.
Our other car is Kia Sportage 4x4, top of the range which comes with it's standard no cost option sound system coupled to comms and sat-nav etc. it's infinitely better than the Porsche. Of course it might also be related to the volume of the listening cabin.

My neighbour has just taken delivery of a Jaguar F type hard top fitted as standard with a Meridian system. Sound pretty nice, at least standing still. He is not an audio person, has not he slightest interest in hifi.

This same neighbour has a fairly new Discovery which is fitted with a Harman Kardon system,also sounds pretty nice... Again I wonder if that's also due the significant higher volume cabin. Later models I believe have Meridian as standard.
Just some observations
regards
Huw


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