I'd argue many DS games likely don't get the ratings they deserve thanks to the whole Stylus thing being a whole new disruptive controlling method that isn't the perferred method for most critics. (Though apparently is for a lot of other people... like my aunt.)
I know I don't want a DS thanks to the Stylus. Well because the Stylus and 2nd screen makes TV porting impossible.
I was considering picking up myself a PSP for myself for my birthday for Jeane D'Arc and D&D Tactics (as i can never find a game) but eh, I just got too many wii and PC games to beat right now.