Absolutely indispensable. This is a critical tool and if you are serious about performance issues or troubleshooting any problems, you truly cannot live without this tool in your Dock.
Thrilled that the developer has surpassed `fseventer` with this. Not only does this have more functionality, but it also is faster. Really looking forward to what other tricks the dev might have up his sleeve (for example, maybe some things re: sysctl max values and other things that top might reveal *could* be useful when diagnosing some issues with this... food for thought?)!