All the motorcycles you mentioned, the Ninja 300/400, ZX-25R, YZF R3, and Gixxer SF250, are popular choices for beginner sportbike riders. Each bike has its own characteristics and considerations to keep in mind. Here's an overview:
Kawasaki Ninja 300/400: The Ninja 300 and Ninja 400 are known for their user-friendly nature, manageable power, and forgiving handling. They provide a good balance between performance and ease of use, making them suitable for beginners. The Ninja 400 offers a bit more power and updated features compared to the Ninja 300.
Kawasaki ZX-25R: The ZX-25R is a unique option as it features a four-cylinder engine in a small displacement bike. It offers high-revving performance and a more aggressive riding experience. Due to its higher power output and more advanced characteristics, it may be better suited for riders with some previous experience rather than absolute beginners.
Yamaha YZF R3: The YZF R3 is designed to be a beginner-friendly sportbike with a focus on rider comfort and ease of handling. It offers a smooth power delivery, good ergonomics, and a refined overall package. The YZF R3 is often praised for its approachable nature and is a popular choice among novice riders.
Suzuki Gixxer SF250: The Gixxer SF250 is a slightly larger displacement option among the mentioned motorcycles. It offers a sporty look, comfortable riding position, and a good balance between power and maneuverability. While it may be suitable for beginners who desire a slightly more powerful bike, it's still important to approach it with caution and respect its capabilities.
When choosing a motorcycle as a beginner, factors such as your riding experience, physical stature, comfort preferences, and intended usage should also be considered. It's highly recommended to visit dealerships, sit on the bikes, and ideally take them for test rides to assess which one feels the most comfortable and suits your needs. Additionally, taking a rider training course is invaluable for building essential skills and confidence regardless of the bike you choose.