I was thinking of ordering one of these after having issues with the M3i Zero that I just got in the mail. Basically if the battery is not 100% fully charged or the DSi XL isn't plugged in trying to set the XL into sleep mode just turns my DS off. Since M3 won't acknowledge that there's a problem with the card I'm now going to try a new one. For those of you with an Acekard2i and an XL, has sleep mode worked for you? Have you had any issues loading any certain games? If you have had problems how is the support team? Last thing is how does the Acekard2i compare to other DSi cards out there? I should've researched more before I got the M3, I would've found out that some people were having issues with sleep mode beforehand so I'm trying to gather a bit of info on this one. Any input is appreciated, thanks.