There are a lot of variables to consider when answering this question. The two most important factors are the quality of the construction and the condition of the safe. Older safes were built with thicker steel and heavier construction materials, making them more durable than modern safes. However, newer safes are designed with better fire protection features, so they may be a better choice if you live in an area that is prone to fires. Another thing to consider is the condition of the safe. If it's been damaged or exposed to water, it may not be as strong or secure as a new safe. So it's important to inspect any used safe before purchasing it to make sure it's still in good condition.

There isn't a definitive answer, as it depends on the specific safe and what you're using it for. Generally speaking, old safes are better than new ones because they have been tested and proven to be effective over time. New safes may be more secure, but they also haven't been tested and may not be as reliable. If you're looking for a safe that will protect your belongings from theft or fire, an old model is a better option. However, if you're looking for a safe to store sensitive information or documents, you may want to consider a newer model with updated security features.