Honestly, it is hard to tell what tokens will give 2x profit because it still depends on the market as a matter of fact even the Bitcoin itself is not surely will give a 2x profit. If we were in bear market there's a less chance that it will be 2x profit for us. Every promising coin can give an enough profit if market is in good shape. Choose the coin that is placed in top 10 since it has high volatility rate and most liquid in the market.