We want a rooster but we're right on top of our neighbors so that probably wouldn't be fair. I actually wondered if there is a breed of rooster that is a little quieter. Any thoughts?
Individual roosters have different voices -- some are shrill and unpleasant, others are deep-toned and resonant.
Don't make assumptions about your neighbors. When I had my in-town flock the closest neighbor figured that if we didn't mind their muscle car then they didn't mind our rooster and the next closest neighbor had grown up on the farm, felt nostalgic about it, and brought his grandchildren over the see the chickens.