Cisco IOS, highest density information per screen of old days CLI, like "sh int" (show interface) to get almost all required information at one glance.
btop is so good for rapid, dense information communication
Wow btop looks fantastic out-of-the-box. I spent a long time configuring htop and still don't really like how it displays info (although it is an improvement over plain-old top)
Bottom is also great. I switched from btop because I preferred the config format.