I believe you meant “Macintosh II” each time you said “Apple II” (three occurrences). (The Apple II, sometimes referred to as the Apple ][, was of course the original late 70s Apple product.)
My view is that while Apple as a company almost failed, the Macintosh was an early critical success, helped companies like Adobe create a large market for computer graphics, was widely used in education, and, after the return of Jobs, has become the most profitable personal computer brand ever, to say nothing of providing the technological base for the iPhone. Horace Dediu, the analyst who runs
http://www.asymco.com, has plenty of financial information backing this.