The few times i've used a 3DS, i've turned it off because the 3D flips around for a bit of you don'y keep it at a very precise angle relative to your eyes. I also don't feel that it is all that special. This sort of 3D has just never really impressed me much. Call me back when you have head-tracking perspective 3D.

Sort of related, the three hours overtime I did today earned me about what a 3DS costs so maybe I should buy one right now ;o