Lisk is #14 in market capitalization ( https://coinmarketcap.com/ ) and #8 on the ratings provided by coin gecko ( https://www.coingecko.com/en ).
It has strong communities of developers and users.
I noticed Lisk public interest is 37 on coin gecko's rating system (Bitcoin and Ethereum in the sixties, litecoin, NEO, ripple, monero and dash in the 40's). They use Bing and Alexa to get this rating.
Public Interest in altcoins is rising of course, but the cream rises to the top. Question is, will Lisk's public interest go up? I think so. All of those rated #9 through #24 overall by coin gecko have public interest higher than or (in the case of 2), equal to that of Lisk.
Its a platform for blockchain applications, relying on javascript. They use "sidechains" which means future ICO's based on Lisk will not dilute their overall token supply.
As for the technicals, Lisk looks so much better than other cryptocurrency right now, the majority of which are struggling.
I am not a financial advisor and I do own some Lisk tokens of my own, but each and every investor should do their own research / diligence.