I got one a week ago. I don't see what is so great about it. It feels exactly like a ds lite and honestly doesn't look that much smaller. Sure the internet thing is cool but eh :/ the camera is kinda fun to mess around with for the first 5 minutes. The dsi ware is pretty limited right now so hopefully it gets better.
I have an original cobalt blue DS that has withstood more abuse than a DSLite could ever take (apparently that thing was/is uncharacteristically flimsy, for a Nintendo product) and even wrecked the bottom screen before the picture fixed itself over the course of a week (hasn't acted up since, as of two years ago.)
Sure I'll get one when this breaks, which probably won't be any time remotely soon.
I still have my launch DS phat or whatever it's called these days, and it hasn't failed me yet. Well, I haven't played it in a year, but I don't think it's failed me.