Buy r4i gold 3ds in USA: http://www.dsflashcart.com/
Today r4i gold 3ds official site r4ids.cn has released the update patch for r4i gold 3ds card, with this patch, you can use it to update your r4i gold 3ds card to work on the 3DS console V4.4.0-10. i have updated my card with this patch, working great and no problem at all.
So now, you can feel free to update your r4i gold 3ds, if you have this card, by the way, you will need a DS console to do the update. or a non updated 3DS or DSi console.
if you want to buy a 3DS flashcart for your 3DS V4.4.0-10, you have more choices now, not only supercard dstwo can work on it, but also r4i gold 3ds can work now.
actually i would recommend r4i gold 3ds more, because the dstwo is expensive, and not all people need the powerful features provided by supercard dstwo.
anyway, there are still many more flashcart need to wait until they release the update. hope they will do it as soon as possible, many guys are still waiting for it.