Update! The dealer loaned me a 2022 Stinger GT for the weekend. Overall, it's a great car, but there are a few detractors that might rule it out. I found the road noise pretty significant, and I say in comparison to my Golf R, which has identical tires, so I know it's not a tire difference.
The transmission is "meh" - even in sport mode or when using the paddles. Some small interior annoyances - couldn't fit my wife's iPhone in the wireless charging cubby. Not enough USB ports in the front or the rear. Kids booster seats make the rear seat belts impossible to latch without adult assistance - I'd have to get skinnier booster seats (I tried the fancy one I have for my Porsche 911 and it solved the issue - just not sure I want to spend $800 on new booster seats).
On the upside - plenty of power. The suspension was surprisingly well-sorted in both the soft and firm modes. In fact, I'd say considering this is a 4,000 lb car, they did one hell of a job on sorting out the suspension tuning. The updated interior with the more "rectangular" nav screen is really a big improvement over the previous model years. The switches/buttons are all well thought out and placed. One odd button tho - to skip forward one music track, you have to press *down* on the steering wheel toggle. Never come across a vehicle where this is the case.
I'm driving two contenders today (Volvo V60 Polestar hybrid + Audi S5 Sportback). I think, at the end of the day, it's going to come down to whether or not these other vehicles are appreciably better, especially with the large price gap. Will report back!
Let us know what you think of the V60. I've only sat in one - and it's beautiful - but I've heard the drive is much more FWD-esque than any of the others you've considered, due to the nature of the powertrain (ICE powering front wheels, electric powering back). Cool car though.