Which is the best load balancer?

When it comes to selecting the best load balancer, there are several factors to consider. Firstly, what is the specific use case for the load balancer? Is it for web applications, cloud services, or something else? Secondly, how much traffic does the system need to handle? Will it be handling thousands of requests per second or just a few? Thirdly, what are the scalability requirements? Does the load balancer need to be able to handle spikes in traffic or grow with the system? Additionally, factors such as cost, ease of use, and support for various protocols and languages should also be taken into account. With so many options available, including software-based load balancers like HAProxy and Nginx, and hardware-based load balancers from vendors like F5 and Cisco, it can be difficult to determine which one is the best fit for a particular use case. So, which load balancer would you recommend for a high-traffic web application that requires scalability and support for multiple protocols?