Rural new development area near railway tracks or flight path

None of both, since both are crap

Wouldn't want either.

My office window is 100 m away from the railway line. The RE and RB are no more disturbing than truck traffic.

Occasionally, a larger freight train rumbles by. You feel it more than you hear it through the soundproof windows.

I would just spend a day with a grill on the property and listen.

Those who build next to landfills, railway tracks, and/or sports airfields are exactly the ones who then get sick years later on TV and demand support from the broadcaster.

Honestly...

If there is no approved plan that the noise factors will disappear within a certain time, I wouldn't even consider such properties for 20 seconds.

I live in a 30 km/h zone for residents only, and sometimes the noise from passing cars annoys me.

Under normal circumstances, I would never buy either of the two properties.

I feel the same way, we also have the 30 km/h zone neighboring street and even the cars - and there are few of them - annoy me in the house. The airplanes also annoy me, although they are already 6,000 m high and still there is a hum in the house.

Of course, I built to standard, in such development areas you can only build with the highest sound insulation class and sand-lime bricks. Anything else would be unreasonable. With [Kontrollierte-Wohnraumlüftung] you also don’t have to open a window.

But the whole thing has no charm.... on the other hand: it seems many people are not bothered by such things, because people already live there today :O

How do you two get through public life if that little bit already bothers you?
My parents-in-law live extremely quietly (no trains, no airplanes, maybe a car once an hour) and I always feel really uncomfortable there because there are practically no sounds at all.
Everyone is just different. I like it when an airplane flies over our house now and then, or at night you can hear the freight trains as a soft background noise. But I think my wife and I are also very insensitive to noise.
I wouldn’t consider the proximity to the train station as negative but rather as extremely positive.

Regards