I got my R4 its jawesome. (Castlevania doesn't work but the video ran super smooth on my cheapass card)
If your buying a card just to play roms go with the N-card. cheapest thing out there and it plays and saves every single rom. if you dont mind picking a save type and slow speed when putting roms on the card go for it. I have my ds-xtreme for my homebrew and then im going to buy an N-card for myself the last one i bought was for my sister
i just relised who started the thread
i advised him to take the r4 rather than the N card when i was talking to him in pms just for the simple fact it does more.