Thinking of upgrading from my A3 to an A7 because legroom. Being 6'8 and with a lot of future travel planned (getting back into photography) I really need comfort. For my budget, ~20k, I can either get something like an a7 bitdi black edition with 60k, or an a7 3.0 tdi black edition with 40k miles. From experience the less mileage generally the more comfortable of course this could be different with an a7. Do they have air suspension? The thing is do you really need a pair of turbos? And is tiptronic better than s-tronic? I went from my a3 1.8tFSI s-tronic to an e46 330ci which had tiptronic, that gearbox was terrible in comparison to the s-tronic but it had done 4x the mileage. But it kinda put me off... I also heard the exhaust sounds better with the single turbos than the twin turbos? Exhaust sound is a thing for me I guess. I am also considering an SQ5 but they are more expensive.