N63 reliability

I’m looking at getting a new car now(ideally something with a V8) and I originally narrowed my search down to the 2019+ M550i, X5 50i, and the M850i, which all come with the N63 engine. I’ve heard a lot of horror stories surrounding this engine, and am extremely nervous about taking the risk of getting one of these cars. Anyone with firsthand experience drive one of these 2019+ models and put 50k+ miles on them? Wanted to get some firsthand information to possibly ease my mind.