The choice of practice swords depends on various factors such as the martial art style, training goals, personal preferences, and budget. Here are some commonly used practice swords that are regarded as good options:

1. Wooden Bokken: Wooden bokken, typically made from hardwood such as oak or hickory, are widely used for training in disciplines like kendo, aikido, and kenjutsu. They offer durability, a realistic feel, and the ability to practice various techniques without the risk of injury from a sharp blade.
2. Synthetic Training Swords: Synthetic training swords are made from materials like polypropylene or nylon. These swords are lightweight, durable, and resistant to impact, making them suitable for intensive training. They often mimic the weight and balance of real swords while offering increased safety during practice.
3. Blunted Steel Swords: Blunted steel swords, also known as federschwert or sparring swords, are specifically designed for sparring and historical European martial arts (HEMA). They feature blunt edges, rounded tips, and flexible blades to reduce the risk of injury during full-contact training. These swords are typically made from high-quality steel and offer a more authentic experience compared to wooden or synthetic options.
4. Foam or Padded Swords: Foam or padded swords are commonly used in martial arts or live-action role-playing games (LARPs) where safety is a primary concern. These swords have a foam or padded core, which provides a cushioned impact while minimizing the risk of injury during mock combat.

It's important to choose practice swords that align with your specific training needs, safety requirements, and the guidelines of your martial art style or training organization. Consulting with instructors or experienced practitioners in your chosen discipline can provide valuable insights and recommendations on the best practice swords for your training goals.