I think the best thing to hold for the next few months from now is Neo Coin because as you know Neo The price coins have fallen far now to reach 15 usd / coins so what are you waiting for? Neo coins are strong coins rarely the price of neo coins drop it up like this
You should be careful with coins like this, cause some of them dont really make it. I have not seen anyone talk about the Topnetworkcoin that you mentioned, so coins like this should be avoided, unless there at lots of people talking about it and there seem to be a hype for it. Well, you can still give it a try to know, since its free.