The Best Last of the Line
The best products before they were subsumed by smartphones.
Point & Shoot: S95. Argument could be made for RX-100, but it was too late. By then the iPhone had passed. When the S90 launched, it was mostly assumed point-and-shoots were on deathwatch.
Consumer Physical Formats: The MiniDisc.
Handheld Game Consoles: GameBoy Advance
Digital Watches: Casio F-91W