My personal opinion on MP3 players is to only buy Apple. They have the best reputation, the best warranty and the best customer service. However, I also agree with you that a 9yo does not need and iPod Touch (last I looked, they do not come with a camera, but I could be wrong) What about one of the new Nanos? You can get a referb from apple with the warranty of a new one for half the price on apple.com. It does not have a touch screen, but the newest ones do have photo and video capability. They are also cheaper than the iPod Touch.
One thing we did for our boys (they all have an iPod of some sort) is to make them save up their allowance for them. That way, they keep better track of it. Santa helped my oldest with apple money for Christmas, but that was all the help he got. He saved up all the other money himself. It took him a good 7-8 months.
Good luck with whatever you decide.