It was worth it to me. My DSphat felt like it was on it's last legs, and I needed a replacement. I did have an odd problem with the outer cameras, with one being more yellowish, but I think it was because of some film or grease on the lens. Wiped it and it was cleared. 3D effect works well for me around half-way. No dead pixels, hinge pretty tight, no errors before or after updating. DS games are slightly blurred, but it's nothing that would prevent me from playing DS games on my 3DS over my DSphat. While the 3DS game selection atm is shallow, I still have DS games to play, and soon, more worthy 3DS games will come out. I got Pilotwings, which is decent. If I need another game soon, I'll probably go with SSFIV, though the last time a played a non-SSB fighter was back on the N64 with KI.
All in all, it was worth it.