What is the best flash-kart to buy for a new NDSi XL?

2 things.

1. I did have a source (I currently cannot find it). I found it reliable, but apparently you don't.

2. What do you mean "we"? You said

By "we" do you mean that YOU work for Supercard? And how do you know that I don't?

 

Well whatever source you got it from was a lie.
It's not being released January next year.
It'll be released way sooner.

 

people recommend acekard2i,but I think the update is a little complex if you know little about flashcart.
m3i zero also can be considered:
http://www.gamezway.com/m3i-zero-sakura-for-dsi-from-m3-team_p16873.html
not bad,I think