PS1.
N64 didn't cut it for me, the feel of the controller was awkward. Don't get me wrong. I loved the system, Banjo Kazooie and the Original Smash bros were my game.
I found myself liking the ps1 a lot more though. Tomb Raider, Tekken, Crash Bandicoot, Final Fantasy, Resident Evil, Bomberman, Metal Gear Solid, Rayman, oh the list could go on and on. And who could forget Croc. :]
The n64, as little of you all actually know, BOMBED in comparisson to the ps1. I still buy ps1 games to this day and play 'em on my ps3, here in the year 2008. Mostly because ps1 games had challenge to them. xDDD
And when I wanna play n64 games, I own some of the games, so those games I can legally own ROMs for. :] Oh loop holes.