The concept of the "best" modern sword can vary depending on individual preferences, intended use, and specific requirements. However, here are a few examples of modern sword manufacturers known for producing high-quality and well-regarded swords:

1. Albion Swords: Albion Swords is a renowned sword manufacturer known for its exceptional craftsmanship and historical accuracy. They offer a wide range of swords inspired by historical designs, including medieval, Viking, and Renaissance styles. Albion Swords are highly regarded for their attention to detail, materials, and overall quality.
2. Hanwei/Paul Chen: Hanwei, also known as Paul Chen Swords, produces a variety of functional swords inspired by historical designs. They offer a range of options, from European medieval swords to Japanese katana, using modern materials and manufacturing techniques to create reliable and well-crafted blades.
3. Cold Steel: Cold Steel is a well-known manufacturer of both functional and decorative swords. They produce a diverse range of sword styles, including historical replicas, fantasy-inspired designs, and modern tactical blades. Cold Steel swords are recognized for their durability, strength, and affordability.
4. Dynasty Forge: Dynasty Forge specializes in Japanese swords, including katana, wakizashi, and tanto. They are known for their attention to detail, traditional craftsmanship, and use of high-quality materials. Dynasty Forge swords are often sought after by martial artists and collectors looking for authentic and well-crafted Japanese blades.
5. Valiant Armoury: Valiant Armoury offers a variety of functional swords, including medieval European designs and Viking-inspired blades. They are known for their high-quality construction, attention to historical accuracy, and reliable performance in both combat and training scenarios.

These are just a few examples of reputable modern sword manufacturers, but there are many other skilled artisans and companies producing exceptional swords. It's important to research and consider factors such as materials, design, historical accuracy, intended use, and personal preferences when determining the best modern sword for your needs. Consulting with knowledgeable enthusiasts, collectors, or reputable sword dealers can provide valuable insights and guidance in finding the right modern sword.