SNES & Dreamcast

PS2 I think.

PSP....but ill end up getting one eventually

PS2 for sure. My friend had/has one and I was always over at his house so I never felt the need to buy one.

Probably the N64. I wouldn't have given up the PSone to have it, but to have both would have been cool.

I missed out on Goldeneye, Perfect Dark, Mario 64, etc.

a ps2/360

The 360.

Not including handhelds, the Dreamcast.

If I was including handhelds, both the PSP and DS would win out. I'm planning to pick one of the two up soon, however. Probably a DS.

Edit: I just remembered I never owned an SNES. >_< 

Dreamcast me and my friend would always play sega bass over his and it was always fun, we would take it in turns seeing who can get the best fish, amazing game.

maybe a 360