I too was questioning which way to invest in bitcoin currently. This is what I did...
A simple phone app bitcoin faucet generated 619000 satoshi after watching videos and downloading games for about a month. It did pay out, but many do not.
I decided to put my real money into a new rig set up and power supply, etc. I have a new Antminer S9 and a SuperNova EVGA PSU. I will mine until the entertainment wears off and hopefully the hardware will not be obsolete in a few months when I will sell it for Bitcoin.
The decision for me was do I want money or Bitcoin? I choose Bitcoin for the long run.
If all you want is profit then mining may not be the way to go as the price of BTC is dropping.
Just giving my two cents/satoshi