Hi Edward ,
Generally speaking , the 5GHz is much cleaner and give you more advantages in the design of RF around any deployment. It has  non-interlapping channels to work with , while 2.4 has only 3 , which is very difficult to plan for the channel re-use.
2.4GHz has a little bit better penetration characteristics , which makes the cell size bigger , which sometimes can be very beneficial, especially when you need to have larger spot coverage and using low-throughtput applications - good example is warehouse scanners . Other then that I am always trying to use 5GHz only - there is much higher chance that I can find channel(s) which are not occupied with other RF equipment (WiFi or non-WiFi) .
Other benefit of 5GHz is that you can use 802.1ac standard which is not available for 2.4GHz . Also you can do channel bonding - e.g. use 4 channels at the same time . With 2.4GHz you can bond only 2 channels , and in enterprise environment it is close to impossible to do such things.
As a conclusion - yes , for today's needs 5GHz spectrum is much better for almost all deployments and applications with some very few exceptions.
Hi buddy. After reading this topic, I had a conversation with my best friend about which is better, the 2.4GHz, and the 5GHz wireless. Our conversation was very long and it's even not a discussion anymore. My point of view is 2.4Ghz one is better but he always wanting to win me by giving untruth comment. He also give me link to an article, here it is: https://gearupz.com/2-4-ghz-vs-5-ghz/. Then we contacted the webmaster of that website to ask about our problem. But after that i realize it's an affliate website, i am not believe them(although that article doesn't provide any affliate link). So Can you guys here give us any recommendation about our problem
It have been hard for our friend ship for a week