I'm a rock n roll fan, i've my own band and i play since i was very young (michele rovatti soundcloud). Having said that i also have to express my criticism for a band that i loved so much through the years. U2 have always been over-rated but no one can deny their live-power, their risk-taking attitude and their ability to connect with the audience.
U2 best records are the result of a very successfull collaboration with producer Brian Eno (read: Brian Eno) starting with "The unforgettable fire" and ending with "Zooropa".
After Eno's era U2 got back where they started in square one.