you don't have to get it down to perfect. any noise reduction technique that doesn't look completely goofy would have me as a buyer. for example, the only noise that really gets me is low-frequency foot-sounds from people walking around in the unit above me, and even then, only in my bedroom. I never hear my adjacent neighbors. I imagine each renter's situation would be different. also, it seems that most documentation on sound-proofing is written by the same audiophiles that can tell if you're using gold or copper connectors. I'm not that picky, I just want to sleep a little better.