New to flashcarts.

Hey,im new to flashcarts as i i only ever had one. And thats was the old two slot system way back at the begining of the DS's life.After i got a dsi(and old cart stopped working anyway) i wanted to get a new cart.
Ive seen a few i am considering, namely R4iDSi SDHC v1.4.1,AceKard 2i and M3iZero DSi.Can anyone make any reccomendations/useful info before i choose which one to buy?

dont buy anything with r4 in the name or you're just letting yourself in for a whole lot of hassle.

My answers from this other post...
I rather not retype :I
http://forum.romulation.net/index.php?topic=53370.0

Thanks for the replies! Going with acekard 2i.