I just bought a DSTWO for my 3DSXL and I think it's great. It was a little confusing at first to set up (due to me not knowing jack about computers and stuff) but I got it set up fine. I've tried a DS game and a few NES and SNES games and it worked great.
I can't speak on other cards, but the DSTWO is very cool.
I can't speak on other cards, but the DSTWO is very cool.







