I doubt any one really knows for sure. I've been through this before when the shares dropped to $100 something then went to $700+. If you look at the technical sector I doubt there is anything better. Microsoft, HP, Dell,.... all have their problems. Samsung may appear to be doing well but it is an "asian" company with asian values & practises much like the chinese companies
There's still some potential upside for Apple. The rumored TV project, continuing talks with Chinese telcos, expanding in the Americas,....
In the past I also did forex & have seen accounts go zero:o At least with Apple shares I will be getting the dividens.