The main switch that is generally considered better for most applications is the Cisco Catalyst 9300 series. This series offers a combination of advanced features, high performance, and scalability, making it suitable for a wide range of network environments.

The Cisco Catalyst 9300 series switches are designed with the latest Cisco innovations, including the Cisco DNA Center, which simplifies network management and operations. These switches support advanced features such as Multi-Gigabit Ethernet, which allows for higher speeds and better performance in today's high-speed networks. According to a report by Cisco, the Catalyst 9300 series offers up to 480 Gbps of switching capacity, which is significantly higher than many competing switches in the same price range.

Additionally, the Catalyst 9300 series supports Cisco's Digital Network Architecture (DNA), which provides a framework for building a more intelligent and automated network. This architecture enables organizations to implement advanced network services such as intent-based networking, which can help streamline network operations and improve overall performance.

In terms of data, a study by Network World found that the Catalyst 9300 series offers better performance than similar switches from competitors in terms of throughput and latency. The study also noted that the Catalyst 9300 series switches have a lower total cost of ownership (TCO) due to their energy-efficient design and lower maintenance requirements.

Furthermore, the Catalyst 9300 series switches are known for their robust security features, which are essential for protecting sensitive data in today's network environments. These features include Cisco TrustSec, which provides network-level security policies, and Cisco Identity Services Engine (ISE), which helps ensure that only authorized devices can access the network.

In conclusion, the Cisco Catalyst 9300 series is the better main switch due to its advanced features, high performance, scalability, and cost-effectiveness. The combination of these factors makes it an ideal choice for organizations looking to upgrade their network infrastructure.