Handheld. Casual games like Animal Crossing, where you can play it as short as a few minutes a day if you want, feel better on a handheld. That way you can play it anywhere.
I played City folk and i liked it, but I didn't play it as much as i played Wild World. I prefer the handheld so i can take it where ever i want and play whether it be to be lazy in bed or on the couch (-u-)
I always need more handheld games, and I'd rather not fight for control w/ a home console. I just like being able to take my games anywhere, esp since I can get really into AC and not wanna put it down when I have to go somewhere. I often move from the couch to bed so it's nice having something I don't have to give up when I go lay down.