Okay, so I got a 3DS with Zelda & SSF4, and I've played with it for a good 8 hours now. I'm definitely enjoying it, but I have a few complaints...
1. The screen is too small for my liking, but I can get over that until the 3DSi or XL comes out.
2. The top screen seems slightly less bright than the bottom screen, and both screens don't get ANYWHERE near bright enough to play in even moderate daylight. The brightness is under-powered, my iPhone I can easily see in the day time, but my 3DS I can't even see in my house with the curtains open during the day without staring at a reflection of my face. This to me in pretty unacceptable, this is a portable system, I need to be able to see it under varying lighting conditions. My DS Lite screens are MUCH brighter at the highest level than the 3DS' at it's max.
3. The speakers suck, and are way too low.
4. I still wish it had a second analog, that would open up so much more game possibilities & improved camera control. I can't see myself ever wanting to play a FPS or any first person game on this. I don't find the touch screen to be an accurate or adequate replacement for dual-anlog at all.
5. The battery life, it sucks. This actually doesn't bother me so much because I can just get a car charger if I'm traveling.