From my point of view, ipad would be the best choise. You may concern that Android tablets are cheaper than Apple's. But the reality is Apple's products tend to be more value-preserving. You will be able to sell your 2nd hand ipad to someone else couple years later at a fairly reasonable price. What about Android pad? You will find results after checking ebay.
不好意思IELTS作文写上瘾了