i have a white DSlite, white > black btw, smudges are hardly noticeable. i had to replace my DSlite due to cracked hinge problem, but nintendo was nice enough to send me a new one for free.
my favorite DS game is Advance Wars Dual Strike, its fucking addicting like crack, ive logged in over 60 hours of play time on this thing.
games im looking forward to the most are Castlevania: Portrait of Ruin and Legend of Zelda: Phantom Hour Glass.