Unsold tokens are not waist. if in the market after a few time the demand increrases then the token will sale out. and if there is no demand you can wait for it .
Those people who are aware from hacking they are used myetherwallet. because it is for long time security and it it is improtant that we secure our investment so that we earn a lot in future.
If anybody want a long term investment then i will of-course suggest him for bitcoin because it has great potential. and if you saw last 3 or 4 years growth of bitcoin it gave extraordinary growth.and of-course bit coin is the king of all coins.