I swear you're missing one piece of info, and I swear I've already posted it here, but apparently not.
The camera(s) on the DSi are only .3 megapixels. Although this information was from other sites. Some other sites though didn't put the point in, hence saying 3 megapixels.
I don't like where the on/off button is, I tend to hold my DS there when I need to grab something with my right hand.
Looking at the other main piece of info: Battery life, it apparently has 1 to 6 hours less. (I don't ever recall my DSlite battery lasting 6 hours)