Audi 2000-2002 (AKA 'B5') S4 owner experience...
Miata should be on there definitely.
As for the cars listed... I do have the noted Audi S4. Mine's an '01. The S4 is an A4 that they shoehorned a twin turbo 2.7l v6 into. It's as fast as I need it to be (156MPH due to limiter) and I can readily mod it to over 700 bhp :Wow1: which is both a pro and a con. Lots and lots of engine/suspension upgrades available from $500 to over $30K so your budget can be your guide to that.
Pro's:
Fast, very smooth, very comfortable car to drive both in and around town or on the open highway.🤤
I've driven from the SF Bay Area to Denver & back for a vacation to Vail. It was quite the enjoyable drive and if my reservations was for the day before I would have done it straight but since I had no place to stay in Vail the day before, I stopped at a friends in Alpine UT.:smiley_drive:
Con's:
It's $$$$$ to maintain or repair and because if this I wouldn't put it on that list. As an example, to do the valves is $2k+. I'm currently facing that issue right now and am still not convinced I should do it or if I should just trade it in for another car.
If the turbos go out, another $$$$$$ bill (more than the valves). Plus they have to remove the engine to gain access to the turbos. Also one turbo alone rarely dies. They usually die in pairs. One shortly after the other typically.:Wow1: