[thatmariolover]

I've used a friend's on a few occasions.

I didn't get any headaches, even after several hours of fairly constant use. But the battery doesn't last much over 3 hours anyway if you're playing something graphically intensive. I really enjoy the system. The feel of the 3D is good and the graphics are passable (we'll see if the OoT remake is more impressive).

But for now, my iPhone has more impressive graphics and lasts longer with all antenas on. But it doesn't do 3D or have dedicated controls, either.