For some reason I never read Count Zero, but I really enjoyed the third one, Mona Lisa Overdrive. It certainly seemed as good as Neuromancer to me, and had a nice plot and a good group of really cool diverse characters.

Nothing against all the many many Cyperpunk works that came later, but this seminal trilogy is a great way to get introduced to the genre. I really like William Gibson's writing style, although he is no technical master of the written word...he just writes with a very cool vibe, and I like the way he describes things, and slowly reveals a books plot over time.