The 90s were an interesting time for U2, one of the most successful bands of the 80s. They pulled a Madonna and completely re-invented themselves after anticipating the rising popularity of club/dance music. Their re-invention turned them from wild boys you felt still lived in your neighbourhood to a gimmick act, dressing up and assuming different personas. But no matter what they did to their image, their music was still interesting and occasionally engaging. Although their 80s material is much more genuine than their 90s output, the 90s are arguably more accessible.
We'll explore these statements when my review of Achtung Baby hits MB very soon.