So yeah I just got a DSi *necropost*
There's lots of things I could say about it, but I really only care for two things:
The material quality is so fucking shit. The DS Lite is really smooth and feels nice (even if you get enough fingerprints on it to clone yourself). The DSi is horrible and grainy and just feels shockingly cheap. It is really really horrible to hold.
Also the power button is under the D-pad. Under the fucking D-pad. Think about this for a second, or better yet just grab hold of your DS and start playing it. Your thumb is resting on the power button unless you hold it at a funny angle. I'm going to end up resetting mid game all the time.