I am SOOOO tempted to move this to OVP just to be a prick. XD
Anyway, I have both the DS and the DSLite, and I've had both and quite a while. And personally, I love my DSLite. The old DS is big, clunky, the screen isn't as bright and so on. Where the DSLite is smaller, smooth, has different brightness settings and so on.
Now, it is true that the DSLite can be broken more easily then the old DS. The old DS is a rock, you can drop that thing from like 500 stories and it'll still be ok. But the DSLite... yea it's more for looks, the smaller, and the upgraded stuff.