Still been looking at cars. My son disapproves of all except the Audi R8 I showed him which is his choice. Sorry, bud. Chalk this one up as your first disappointment in your Dad category...
Anyway, among the contenders if I buy are
14 Mazda6 Grand Touring
14 Ford Fusion Hybrid Ti (unlikely)
14 Optima SX Limited Turbo
13 (but new) Infiniti G37x
13 (but new) Acura TL SH AWD
12 Audi A5 Quattro
Is there anyone who's had the A5 Quattro who hasn't loved it? I mean this seriously, as I know several people with it and they just adore their cars.
The only one I have personal experience with is the G37. I hated it so much I traded it in after a few months. BUT that had entirely to do with the blind spots. As it's been a few years (mine was 2010) that might not be such a problem now. Positives were it was zippy and felt like a cocoon.
2010 and 2013 are still the same engineering generation so they may have tweaked the blindspots but you don't undo fundamental flaws until you have a new engineering.
As you now know, smaller is better in Seattle so some of the first listed midsize sedans feel a bit big here. A big engine is great fun but if I'm honest, I'll never get a lot of chances in Seattle to open it up. Zippiness, handling and comfort in the cabin are most important for me right now.