All this talk about the Lite has really got me wondering: Is it really worth it? Well, I recently purchased one against my will (my brother wanted it) and I gotta tell you, it really isn't worth it unless your origonal DS is really really screwed up. I'm talking about screen scratched up and dead pixels everywhere.
The Lite has a bright screen very similar to looking into the sun and seeing pretty colors on it. There are some colors I had no idea existed in some of the games I play. The only problem is if you have it on the brightest setting all the time, your battery will be going out quicker than a PSP. The button changes are nice though. The A B X and Y buttons aren't like those crappy cell phone buttons, the power button has turned into a switch and the microphone is in the middle now. Also, just like the name says, it is a little bit lighter. This is where the new stuff stops.
It cost $130! This is completely ridiculous for the amount of new things on it. They either should have put more things on it or lowered the price even more. In short, don't buy it unless your DS has been thrown and flushed down the toilet and is just all screwed up.