I'm upgrading to the XL and wonder on which flash cart I should get. The R4i or DSTwo. I've read some issues where the Supercard might overheat or drain battery faster while in the 3DS, can anyone confirm that? Since that's my only worry, putting in the cart while using streetpass and the battery drains faster. On the other hand, if the 3DS gets an update that perma-blocks the R4i and I have to get a new one..... no comment Just either R4 or DS2?