Microinverters operate independently, so each panel performs to its fullest. One shaded or dirty panel won't affect the rest of the system.
Produce more at dawn, dusk, and in low-light conditions, for a longer solar day.
If one panel goes down, the others won't go down with it.
An all-AC system means no high-voltage DC power on your roof. 
Streamlined components make for quicker and less costly installations.
High-quality materials and remote problem-solving save money on repairs.