I was planning to enter in mining area for long time but didn't take first step yet. It might be SONM to start with as I have enriched my knowledge about mining and related matters to more higher level than it was before. I have secured few thousands SNM tokens already because I do believe in its future regardless of prices and situation on transitional phase, we are passing through.
For now mining is not easy because the price of equipment expensive and also the price of coins that go down makes it a challenge, I don't know in 2019 whether there will be a change. I see on sonm.com that mining SONM will be profitable compared to others, I think it's worth trying.