i recommend these cards for 3ds V4.5.0-10 and dsi V1.45
As we know that 3ds new firmware and dsi new firmware has been released for a few weeks. currently the 3ds latest firmware is V4.5.0-10 and dsi latest firmware is V1.45. We all know that the latest 3ds and dsi firmware has blocked many flash carts, not all the cards can work on them. So if you plan to buy a flash cart for your 3ds 3ds xl or dsi, make sure the card can work on your current version and also upgradable for the future 3ds update.
Currently i would recommend the cards below for your 3ds V4.5.0-10 and dsi V1,45
R4i gold 3ds. should be the one from r4ids.cn, this one: R4i Gold 3DS Wood R4i 3DS flashcard For DS DSi 3DS i put this card in the first place, because this card is really a good card for your 3ds xl, 3ds, dsi and ds lite. Maybe you don;t like the r4 brand because of the r4 clone cards. but don't worry about this card, this r4i gold card has been confirmed a very good card. Supported by wood official team, update regularly to provide more features. more importantly, this card can always release the update for the future 3ds update. it is upgradable. means you don't need to worry about the future 3ds update.
Tips: if you plan to buy the r4i gold 3ds, there are a few things you need to know, it is better you buy a pre updated one, means the card is already updated for the latest 3ds and dsi firmware, so you don;t need a ds console to update it by yourself, not all the people have the ds lite to do the update. second. make sure you buy the latest revision C of the r4i gold card. because the old revision can not work on the latest 3ds and dsi firmware.
Supercard dstwo there is no doubt that dstwo card is the best flash cart, Supercard DSTwo Best flashcard for DS DSi 3DS but i didn't put it in the first place for some reasons. at first, it is the most expensive card for it great feaures. Money is always a problem. we need to know whether we need the extra features. Second, if you only want to buy a flash cart that play ds games, you really don't need to buy the dstwo card, r4i gold 3ds will be enough for you, no need to spend much more on dstwo card. So why i should choose dstwo card. if you need the extra features it offers, then buy dstwo card, what are the extra features. real time save, real time cheat, real time menu, play gba games, slow motion. those are some of the features, if you need any of them, then buy dstwo card. And don't need to worry about the update problem, dstwo is the best card, so it always can release the update for the future 3ds update.
Tips: if you decide to buy supercard dstwo, make sure you buy the pre updated dstwo card from the sellers, so you don't need to update it with a ds console when you receive it.
There are also some other cards, such as r4i sdhc 3ds, ace3ds plus card, and even acekard 2i. will talk about them later, currently buy r4i gold 3ds or dstwo is the best for you.