What kind of extra functionality are you getting from Instruments that isn't covered by other tools?
Other than just the niceness of the interface, a key one is that the M4 generation added profiling of CPU branching and afaik instruments is the only thing that supports it right now
An interface designed around finding real bottlenecks instead of "here is some data do you think it is good".
Other than just the niceness of the interface, a key one is that the M4 generation added profiling of CPU branching and afaik instruments is the only thing that supports it right now