PCE>Snes>NeoGeo>Genesis
Why PCE?
Best library of shmups, plenty of good platformers/RPG's, quirky titles...just awesome all around
Snes: Rpg's a plenty, and some fantastic platformers....shmups were lackluster for the most part.
Neo-Geo: Awesome but limited due to cost, and not enough shmups too many fighters.
Genesis: Shitty color palette, tin-can sound...otherwise a solid library. Just hurt by the aforementioned limitations.
Edit: a Nod to the Amiga, not a "console" but a bad ass machine none-the-less...