I really love both but I'm wondering what everyone else's opinion is? I remember when I first got my DSI how awesome it was to go online on my DS. I still like doing that and I like how small and light the DSI is so its great for travel. I know some people don't like the 3D on the 3DS somehow, some think it hurts their eyes but I imagine thats because they don't have the settings right. I know it doesn't hurt my eyes and the 3D is amazing. I sometimes go from playing a 2D game, and then start playing a 3D game, and I'm shocked at the difference. You forget how distinctive the 3D is.