I don't know if its the Florida climate or what, but any post-2007 Bmw '35i' model of any series tends to fall apart after 60k miles.
The BMW community is incredibly Huge down here and its usually the go-to team for someone switching over from Nissan. I can't even begin to describe how many fuel pump issues (High Pressure) I see on those things, especially with the 1 and 3 series.
The '28i's' fare slightly better in terms of reliability and are quite enjoyable in manual or auto versions, even without the 300hp. If you plan on tinkering with it and adding gofastbits, I would be leery with a used 35i model.
These will forever have my heart though.
As long as the vanos system doesn't take a sh*t on me.