i have ipod nano i know little about this want to get 7 year old daughter ipod for her bday. thinking of getting the ipod touch but what generation? I am looking to buy used to keep $ down what memory 8gb good? she will use to listent o music and play games im sure do they all come with camera? what cost ive seen all over board 4th generation = $170 to high? looking to keep under $100. thanks!