After reviewing the Emercoin Github repo (https://github.com/Emercoin/), @Oleg, @Eugene M. and team are rock star coders.  IMO Emercoin is a solid investment.  I bought and mined my stash a while ago and will not sell for at least 5 years.  Keep up the excellent work.  And yes, they don't hype their technology like others so they are likely undervalued right now.