Lol @ this "professional investor" who clearly doesn't know what he's talking about.
NXT is very interesting indeed, and eMunie at least as interesting. Hard to predict which one will end up on top in the end. NXT does have first mover advantage, but is kind of a rushed product with hardly any features. eMunie has a far more thorough approach and is under development and being tested for almost a year already by a capable team.
Skycoin looks interesting but to be honest I don't know much about it.
I recommend mingling in the NXT and eMunie communities for a few weeks before doing any significant investment, instead listening of fanboys of NXT and eMunie flaming eachother on this forum