With all of those applications that we can use to create a complete block diagram from a high level overview into a super detailed block diagram (which is called the Schematic Diagram). Which...

With all of those applications that we can use to create a complete block diagram from a high level overview into a super detailed block diagram (which is called the Schematic Diagram).
Which application or software tool do you prefer in creating a block diagram? and Explain Why? (Is it user friendly? Much efficient? Does have more features? Easier to navigate?