Audi A5 for big miles - Which engine 2.0TFSI or 3.0TDI

[Scoobman]

I know very little about Audi.
I went in a friends 2.0TFSI and it seemed to be the car for me.

So I very much fancy a used A5. Year 2009 ish mileage 100-150k ish
Manual. I will not be looking to sell. I will keep it until it dies and it will be very well maintained.
I will put big big Motorway and Autobahn mileage on it.

(I currently have a BMW with 320.000km on which I will run alongside the Audi)

Any opinions on which engine to go for 2.0TFSI or 3.0TDI?
And any known common faults with A5s of this vintage to look out for or to expect a bill for.

Thanks

[Scoobman]

Thanks guys