Should I buy a persian cat, nintendo 3ds or a ipod touch?

Well my mom said that I could buy one of the above mentioned thing......before someone says adopt a cat I can't because that is not available where I live and I would have to buy one hundred percent.i have a digital camera,a galaxy android phone and a ps3.i have one dog and ten australian budgies.considering this this which one should I get and why??i am fourteen............the best I can do is get two things in used and I would probably have to save for months so I am only considering this if the second thing is really up to mark!!!!!!