Well, first I would riot. While normally I'm fairly easy-going when it comes to violence, and I'm not too afraid of government control getting out of hand, this would be insane and I would be all over that shit like... something that has shit all over it? Okay, that was a bad simile like a thing that was also a bad simile.
PC, hands down. Specifically my laptop. Largest library of games, most mobile, easiest web-browsing, plus integrated mouse and keyboard support, I can record my music, PLUS there are so many USB doohickeys's that are simply plug-and-play that I have a simply MASSIVE number of peripherals that no console can hope to match.
And PC's (and Mac's too!) are very much systems. They all run on the same principles, the only difference is who makes them.
If PC's don't count, I guess PS3 comes in a distant second, simply because I've always had Playstations, and so have more games and am more familiar with the game library.