Determining the "best" sword for the apocalypse is highly subjective and depends on various factors, including personal preferences, individual skill, and the specific circumstances of the apocalypse scenario. However, if we consider practicality and historical effectiveness, the following swords are often mentioned:

1. Katana: The traditional Japanese katana is often regarded as a versatile and effective sword. Known for its sharpness, balance, and cutting ability, the katana has a proven historical track record. Its design allows for swift and precise strikes, making it suitable for close-quarters combat.
2. Longsword: The European longsword, used during the medieval period, is another versatile and well-rounded sword. With its longer reach and two-handed grip, the longsword offers good control, power, and versatility in combat.
3. Machete: Although not a traditional sword, the machete is a practical and durable tool widely used for cutting vegetation and various survival tasks. Its simplicity, durability, and versatility make it a popular choice for wilderness survival and potential combat scenarios.

It's important to note that no single sword is universally superior in all situations, and the effectiveness of a sword depends on the skill and training of the wielder, as well as the specific circumstances of the apocalypse. Additionally, swords may have limitations in scenarios that require long-range combat, dealing with heavily armored opponents, or situations that demand more versatile tools or firearms.

In any survival situation, it's crucial to consider multiple factors beyond just the choice of a weapon. Skills, physical fitness, access to resources, and overall preparedness are equally important considerations for surviving an apocalypse scenario.