For simple everyday problems like this, I really think that if you should talk to your neighbors, like an adult, before you call the police or get into a battle of one-ups-manship. They may not have any idea how loud they actually are. If they can't be reasoned with, move on to plan B. FWIW, the police are useful for resolving a specific situation (like a raging late night party, domestic dispute, etc) but not for instructing your neighbors in every day courtesy/respecting their neighbors.
Not necessarily....it depends on the department policies on what constitutes a reportable incident versus something like a record of contact, which may not have any real detail. Disturbing the peace isn't a criminal offense in most jurisdictions so I'm not sure how a judge factors into the equation.