Hrm, I don't know yet, but we'll see by the end of this post. Here's what wouldn't get it:
PS2: Looks cool, but it has only 2 controller ports. Takes it ROIGHT OUT of the running.
Dreamcast: My favorite system of all time, and it looks pretty snazzy. But, it's way too

ing loud. Too bad though, i love that little guy...
I actually liked the look of the Jaguar, but the controller kills it.
I think I'm gonna have to go with the Turbo Duo. Looked cool, and it used Hu Cards. That's the most badass thing ever.
EDIT:
Actually, the Hu Cards got me thinking. I might have to change my vote to the Gamecube, here's why. It's got 4 controller ports, it's reliable, has cool interfaces. The controller is awesome, and it's wireless controllers are amazing. It plays games on minidiscs. I think alot of people take this for granted now because it's a current system, and we're all used to it. But picture in 20 years when everything is uniform, that a game system played little minature disks. It's kind of like the Hu Card appeal.
Also, it has a handle. Many people underestimate/mock this, but it makes moving the system around a hell of alot easier. The ability to link up to the GBA and the addition of the GB player are very cool too.
Shit guys, i think i just changed my vote!