Just got mine in the mail today with Pilotwings & Street Fighter.
I just have to say that playing it in your hands where you can move it close enough to have the optimum 3D effect makes all the difference. Playing it at a kiosk in Best Buy brought me over the tipping point to purchase it despite the fact that it was bolted to a stupid display approx. 4 ft tall, and after an hour or so of tinkering around with the features, I'm definitely glad that I got it.
My wife was blown away by the AR cards and all the features, especially face raiders and the ability to make a mii by photo. She was also impressed with watching me play Street Fighter for the sake of the 3D.
Both Pilotwings and Street Fighter are a ton of fun, but I see myself sinking my teeth into Pilotwings first, as it's been a long time since I've played a flight simulator, and this is my first pilotwings game. Street Fighter will be a good way to get my fighting game fix on the road.
I tried out a regular DS game since I heard there were complaints about the graphics being lesser quality, and while I did notice a bit of the colors being washed out and a tiny bit more pixelation, it wasn't enough to get on my nerves, so I think i'll be getting rid of my old DS lite. I also saw there was a
Nyko Battery attachment that doubles the battery life of the 3DS, so I think I might grab that before my next trip.
Overall, very happy with my purchase, and I'm sure my current games will tide me over well in the meantime until some more meaty experiences show up