There are a few things to consider when deciding if titanium or sterling silver is better for nose piercings. First, think about what kind of metal you are allergic to. If you are allergic to nickel, then sterling silver is not a good option because it contains nickel. Titanium is a good alternative for people with allergies because it does not contain nickel. Second, consider the healing process. Titanium heals faster than sterling silver because it is less likely to cause irritation. Third, think about the price. Titanium is more expensive than sterling silver, but it will last longer and is less likely to cause problems during the healing process.