Nice review, but there seems to be a glaring omission: no mention has been made to the fact that there is a very high chance that this cart will be blocked by the next DSi firmware update, and that as the AK2i does not seem to have an updateable bootloader, if this happens it will essentially leave the early adopters with a useless piece of plastic unless they manage to refrain from ever updating their DSi. I think at this stage its a bit more than speculation that Nintendo is going to make better efforts to prevent piracy on the DSi, due to the fact that we already know they can update the firmware and have already blocked all previous flash carts. As Nintendo can update the DSi firmware, they can block AK2i and anything that comes after it - this is a fact. The only viable solution for the DSi is going to be a product which is fully updateable, and then it will be a cat & mouse game with Nintendo releasing updates to block any currently functioning carts and then manufacturers releasing a new "bootloader" to counter this each time.
AK2i and anything similar which can not be fully updated will only ever be temporary solutions, which will only function on units currently in the market and only as long as the user does not update their DSi firmware.