Personaly i use my old R4 with Wood Kernel via Apache Thunder's Stage 2 Launcher and it's fucking cool and works very well.
TWLoader is bad for homebrews, better get a R4 (unless you want to use older versions of TWLoader)
you should probably buy an R4, twloader is still in development and maybe it will never have the compatibility any ds flashcart have.
I'd get a card compatible with NTRboothax for brick protection (but you need to have a way to flash the card to switch functionality).


http://www.nds-card.com/ProShow.asp?ProID=149I see that there are a huge amount of R4 cards...Wich one should I buy?