I am getting it for the better screens first.  The DSiWare is potentially good, but still an unknown quantity.

I voted other, given that my only motivation for getting one would be to put ridiculous amounts of emulatable games on an SD card along with a new flashcart and achieve emulation nirvana (since I'm too lazy to mod my PSP).

Really, the music visualizer is friggin awesome. 

NOT FOR ME!!!! MUSIC FOR MY EYES!!!!!

None.

I'm not interested in the DSi at all.

I have no money to spend on it.  The launch games don't appeal to me, and theres no real reason to replay the DS games I have.  I haven't played my DS in ages tbh, I have the Phat.  The features just aren't really interesting to me, I have a camera and photoshop, I have an iPod, and other various things.  

I'd like a completely new handheld, but we probably won't see that for a while.  I might get one eventually if any decent games come out for it.  

Other- I don't own a DS period, and this skew might be what convinces me to bite the bullet.

The only thing that could convince me to buy a DSi is the whole downloadable game aspect. New and original DSiWare games could definitely be interesting, but if they do something along the lines of VC where I can take old GB/GBC/GBA/NES/SNES/etc games on the go with me...I'd probably grab a DSi right away. ...or I could just buy another PSP and hack that shit and run emulators on it :P

I just bought a new DS 3 months ago, and at the moment, the DSi has no features worth purchasing another one for.

Music Player no doubt.

-- God Bless.

I got a Lite a Christmas. I guess my main reason to buy one would be the slicker design, and to not have a DS with a big fat "Guitar Hero" brand on it--yeah, I think the other ones were sold out--but DSiWare has potential, and the visualizer looks interesting, albeit useless.

Damn you, oldschool! Why do I have to choose between A and B?!?! =/

None of the options, because none of them interest me that much. If I had to pick one, it would probably be other, with the use of the SD slot.

I won't buy a DSi unless some Virtual Council is announced, that isn't gameboy stuff.

Or, if you could "install GBA games to hard drive" or, SD card, but no, I won't be getting one for a long while.

"The only thing that could convince me to buy a DSi is the whole downloadable game aspect. New and original DSiWare games could definitely be interesting, but if they do something along the lines of VC where I can take old GB/GBC/GBA/NES/SNES/etc games on the go with me...I'd probably grab a DSi right away. ...or I could just buy another PSP and hack that shit and run emulators on it :P"

None, really. My DSlite is both hard- and softmodded (Chrome case / flashcard), I am very satisfied with it and none of the changes seem all that relevant. Some of them are even available for current DS flashcard-owners (such as great emulation, changing the backlight in-game, music visualizers and other software).