Hacking Ds Flashcard for New3ds on 9.0 with v0 whitelist installed

[Alessandro98]

Hi guys, I know this has been asked more than one thousand times, but, besides the DSTWO, that is the best Ds flashcart but that isn't available or overpriced everywhere, what are the best DS flashcards for a New3ds on 9.0 with the v0 whitelist installed? Moreover, what site is the best one to buy one from Italy?
I found nds-card.com, which is a Gateway official reseller and also Gbatemp trusted reseller. Is it reliable? There are a lot of R4 Ds flaschcarts that seem all identical but they have different prices:
http://nds-card.com/ProShow.asp?ProID=490
http://nds-card.com/ProShow.asp?ProID=450
http://nds-card.com/ProShow.asp?ProID=569
http://nds-card.com/ProShow.asp?ProID=146
http://nds-card.com/ProShow.asp?ProID=149
Which is the difference among them? Which is the best?
I would need a DS flashcart only for installing the Gateway exploit, because my Gateway blue seems defective as it doesn't work on my N3DS, but, since I will spend for sure more than 10 euros anyway, I would like to invest a little bit more and get a flashcart at least compatible with the latest 9.7 firmware and that has got the real time save feature. Are there any other interesting features?
Thanks a lot in advance

 

[The Real Jdbye]

R4i Gold r4ids.cn version. That's the only other cart worth buying.

 

[Jiro2]

Are you sure you installed the whitelist on SysNAND? Gateways instructions were pretty bad for these recent releases and if you follow them you'll probably do it wrong.

 

[hippy dave]

R4i Gold r4ids.cn version. That's the only other cart worth buying.

This.