I know there are many people asking this question to themselves at the moment.  And you can only invest in 1 in the 3 options. However, i have a new investment method called SE-ICO
This method allows investors to buy ICO and hold BTC and ETH to wait for the market to recover.

Example: When you use 1 ETH worth $ 500 to buy 2,500 FDC (1 FDC = $ 0.2). After several months, the ETH price increases to $ 1000, then you can withdraw $ 500 (equivalent to 0.5 ETH) from the FDC. Of course, you still have 2,500 FDC.

I think the form of selling ICO under SE- ICO will create a new trend for ICO. Because the FDC is the first ICO to sell this SE - ICO and is succeeding.

Link Bitcointalk
Link SE ICO
Link Fondo Network