If you're looking to actively achieve a rate of return on your investment, you could consider providing Liquidity for the Nu network.
You put your funds on an exchange and run some software which places orders on your behalf. Our server then rewards you for those orders.
The current rate of return is 9% per month and is paid in NuBits. 

You stay in total control of your funds at all times.
It could be a nice way to earn some profit while you decide which coin to invest in.

There's more information on the discussion thread here https://bitcointalk.org/index.php?topic=1065799
or on the NuBits forum