The bet profit you can only make with new altcoins,
look at Newton-coin NCP , the coin from the Newton-Coin-Projekt for example,
 start  two month before with a price 1 litoshi at the exchanges and today the
price is 22 litoshi , that is a price growing about 2300 % in two month.

The new Worktips coin,  WTIP has made 700 % in the same time.