Yep, it's a crapshoot depending on your neighbors. Back in my dense living days, things were pretty good, except when the drug dealer moved in next door...

Same applies to some extend to suburban density, but even crappy neighbors are harder to notice... Except the house that does car tuning all the time with a priority on loud revving engines.... Ugh...

Yup. My prior experience with apartments - even single height apartments - is that either you're going to annoy someone with sounds (had a neighbor that worked nights and hated every thing I did when I was home) or you'll be annoyed with someone not being quiet when you personally need it.

Hell I had a house with a neighbor who rented that liked to leave their dog tied up outside at 5pm barking incessantly. Not fun to come home from a day of work with a stressful commute to try to unwind.

I love my quiet.