I want to buy an ipad but do not know which one should I buy ipad or ipad 2 or even wait for the ipad 3 but do not know when it will be launched. So I have to make a choice between ipad and ipad 2 . I do not know if it should have Wi Fi + 3G or WI Fi only, what should be the storage space or it should be black or white? I am totally confused so please tell me which ipad I should buy