I have 7k$ to invest for 2018, I'm looking for the next big potential (as everyone I believe

).
Need your best suggestions !
I looking for POWR and ARK, but maybe you have a better opportunities ?
Those may be better opportunities but I would put at least some of those funds into the top 5 marketcap coins. It is safer and will provide less return but you won't be worried about your coins all the time and for peace of mind I will pay for that gladly. Take 2k and throw it at BTC, ETH, LTC in my opinion the rest can go to strong alts.