Personally I feel like the series only goes downhill with Count Zero and worse with Mona Lisa Overdrive, but they're both fine books. Count Zero does world building well, it's cool to see the BAMA eastern seaboard, but Bobby is not as compelling of a protagonist. If anything the simstim star Tally Isham is a lot more interesting but there's a lot of human trafficking adjacent stuff happening there too.

Don't remember Mona Lisa Overdrive very well but the whole A plot with the girl being protected because she has a modem in her head was a bit hard to follow. Though once again great world building. The B plot with an older Molly Millions delivering The Count's cybersarcophagus in the desert was cool af though.

edit: that's not to say they're not fine books