See, this is hard to say because each console has revisions.
The 90K PS2s look better than the 75K and under PS2s which look better than the fat PS2s.
The PS3 Slim looks better than the PS3 Fat, mainly because I like function, and lack of finger prints is great.
The 360 Original looks better than the 360 S, again due to lack of finger prints.
The White Wii looks better than the Black Wii - lack of fingerprints.
All the systems with internal power supplies are also great.
The choice is pretty much: White PS2 90K - smooth front, integrated power supply. White PS3 Slim. I'd go for the PS2 simply due to size.