Another great poll!
I'm a very noise-sensitive urban reader.
I'm too easily distracted by things like TV, music, or people.
On the other hand, I don't like total silence, either. I like some sort of white noise or, as patilsaurabhr mentioned, garden sounds.
If the weather is nice, I'll sit outside or open a window and listen to the birds and breezes. If not, I just turn on the little fan I use for white noise when I sleep.
Anyway, I answered "quiet, but not too quiet."