Hey guys, Jumping straight to the core of the post: I have two 3DS Cosmo Black units right now with me. I need to choose one to keep and one to sell. Both of them are ambassador units, but, they have some differences: 3DS Unit A (The first one I got): + Have ExciteBike 3D - The charger is not the original one. Measuring it's output,it's a bit higher than what's supposed to be (5.3v). Im not sure if that might damage the 3DS unit or battery life. - The analog stick seems to be a bit slippery. Cleaning it with Isopropyl alcohol improved the grip, but it still doesn't feels like Wii's nunchuk grip. - Minor SD door scratches due to this crap. - It had records on activity logs the owner used flashcarts.. Many failed attempts also. I've formatted the unit since then. - It was used for quite some time (3-4 months, and probably a LOT) by the previous owner. - The box have 2stickers on it with the code 8070945. Is it too much coincidence to have the same number here ? - I worry this might be a refurbished unit. 3DS Unit B (The one I got recently) - Do not have ExicteBike 3D - Got a dead pixel on the top screen, close to the top left corner (This is what put me in doubt in which one to choose! D. I'm not sure if it's a single dead pixel, 2 or 3, one closer to another. - The IR port is a bit scratched (how bad is this?) + Have original charger (Measuring it's output, it's 5.0v. Very close to the china one from the other unit. o.O ) + The analog stick grip seems to be equal to the Nunchuck. I don't feel it slippery when playing Zelda/DoA. + It wasn't used as much as the other 3DS. According to the previous owner, it was used very few times (And it came with firmware 1.0.0-0 and the activity log showed max 5 hours of gameplay prior formatting). + Except from IR port, there's no case damage. + Even coming without ambassador, after trading mails with Nintendo, I could prove this was bought on the ambassador period, and they enabled this unit as an ambassador unit. + Battery seems to hold the charge for more time on this unit. (Never timed, might be just me...) I'm not sure what to do... I can buy Excitebike for the other unit, but that Dead Pixel... At least right now, when I just discovered it, I keep looking at it, all the time.. Not sure if I'll forget about it Suggestions?