as for me I choosed the eth, eos, ripple and from time to time I try different coins depending on the market situation
For long term, the coin Neo is perfect. This is a very serious project with a large community. it will grow next year
Your choice is perfect because the price of NEO is still cheap in the market which we can easily expect the price of the coin will increase with the market recovery. There are some other potential coins like AE, ETH, ONT, EOS, BNB etc.