Just had my test drive today with both the RWD and P3D+
TL
R - Great car, much better than 2016 Camry, worth $30,000 upgrade, P3D+ is fast, but not worth the premium price unless you want that M3 beater experience.
Test drove the RWD first, Aero wheels + White exterior, just how I would order it. Great car, super response and nimble. I'm comparing this to my daily driver (2016 Toyota Camry SE w/ upgrades across the board, out the door $26k). Road noise is lower in the model 3, but not significantly so. The ride was smoother than the Camry, though I would probably go with UP strings to soften it a bit. Acceleration is night and day obviously. Super comfortable seats in comparison. Glass roof was nice, don't think extra tint is necessary on the roof, but will probably tint it anyhow. Much more storage space, the model 3 is roughly the same size at my Camry, probably a tad wider, but fantastic overall. The right stalk button was getting kinda loose, something to make note of. The center console, my god did it have so many scratches and fingerprints. Wrap that immediately if you get the car. I got used to the center display within a minute or so. Still would like a HUD. The roof liner was kind of a downer to me. I did notice the interior of the car to be kind of lacking for a 55k+ vehicle. Most notably the roof liner, it felt about the same as the one in my Camry. I do wish it came in black.
P3D+ was wicked, felt the springs and the Michelin 4s tires made a significant difference. 0-60 in 3.5 was rapid and satisfying. White seats while great, I do not find it worth the $1500 upgrade + the AWD requirement just to play. Black components + white seats + beige roof liner just does not fly with me. Spoiler was nice, understated, not significant. Badge was simple, but I'd leave it off. The ride was soft, but it was probably because of the low psi (36). The P3D+ just isn't worth the extra cash unless you need to go fast. Everything else about the physical car is too similar to a basic 35k model 3 to warrant that $50,000.
Personally, I'd just get AWD +keep the black seats + Michelin 4S tires, and lowering springs and call it a day.