Why "better"? Because the default download is often garbage. Many stream sites serve 480p by default to save bandwidth. To download "better" means to force the 1080p master manifest.
Downloading is only half the battle. "Better" also means usable. Do not let 500 episodes sit in a folder named "Downloads." download video from kimcartoon better
To do this "better," you need tools that bypass the browser instability and grab the direct stream file. Why "better"