Ace3ds is a budget flashcart which is working on latest DSi and 3DS firmware. If you only want to play DS games, that's fine, just buy ace3ds from here: http://www.dsflashcart.com/cheap-ace3ds-flashcart-for-ds-dsi-3ds-p-249.html It is cheap, so it is not that full functional. If you can choose, i recommend the Acekard 2i or still the r4i gold 3ds.
Hey,guys,as far as I know,the ace3ds card is the cheapest card with various features, if you just want to play games,this card is your best choice.BTW,it can support the latest 3DS v4.1.0-8 and DSi v1.44.I heard about this one is good,http://www.oz3ds.com/product.php?id_product=44 it is listed on its official site as a US reseller.