Huh, I had an A5 Sportback and I thought it was competent but not amazing.
Personal opinion is the GTI/Sportback/Audi wagons get hyped to the moon.
I rented mine for a 400km daytrip to Port Angeles with a road bike.
TBH folding seats & stuffing/removing bike from trunk was more difficult on my back than with the bike rack on my s2000.
252hp was just enough power for a little bit of 1 lane road passing but DCT felt jerky on takeoff
Suspension was soft but had a ton of dive/squirm on hard braking so doesn't feel confident
Infotainment was very confusing and always had 4 popups on startup
Mild hybrid system never did anything
S5 also felt too mild for me as well, not as emotional as W205 C43 or M340i.
IMO the convertible is where the thoughtful/'niceness' of the Audi pays off with the seatbelt mic, folddown rear seats, no weird luggage contraption, neck heaters.
Ended up doing a similar trip to Rainier with the S2000, was just fine lol