After no. Of months in fast lane and very enjoying rides in my 4.8is i'm planning to part company and go for something more subtle... Yet different

I've been looking at Audi A8 4.2 tdi which i'm so keen to get on/in so was wondering had anyone ever had one and could share some insights?
Btw... Car is not as appealing as bmw is nut the engine is true craftsmanship in the same way as 4.8 is albeit on totally diff. Terms.
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