Crypto market is go down in this movement. I have some USDTs. So I want buy some coins. Is this time good for buy? What are the good coins to buy and Hole long term? Any suggestions? 
cardano, nem, eos, ziliqa, ve chain are the good option in my mind now. All of them are working in blockchain services, and maybe if its true blockchain market will become bigger in 2020 and who knows what market will be in 2020 maybe there will be another bull run and market will become better.