Posted By: scorpei
I've just released my review of the Express Card; A new flashcart device for the Nintendo DS. This review is however also applicable on a number of other devices (I have yet to receive samples of them so I can't be a 100% sure), namely the DS Fire Link, the NeoFlash MK5 and possibly others.
All games I tested worked with no (heavy noticable) problems/lag, even ones that are known to give problems such as Castlevania. The menu system could however still use some work (it's quite unclear, though after a while you partially get used to it) but that can of course come over time as it is just firm/software
Read it here
-Scor