[R12ax7]

Obviously we don't have all of your lease details (money down, MSDs, etc.), but the jump in monthly payments from my relatively loaded 2016 340i to my '21 m340xi was in a similar ballpark. I also shopped for an '18 340i and there wouldn't have been too much of a price change from the 2016. Probably closer to $200/month but that extra $$ is probably a direct result of adding Xdrive.

Both of these leases were with no MSDs and minimal money down.

FWIW, I dont disagree with your assessment of the G20 as more refined (not necessarily in a good way), but the worst part about the switch was loosing the manual transmission in my F30. Having said that, the interior and tech of the G20 was not something I was especially excited about when I ordered, but now that I have spent a few months in it, I cant overstate how huge the upgrade is. It can definitely get a bit rowdy if you want it to also.

Edit: Just realized you are north of the boarder, not sure if my info is as useful!