ZEC is a big ? right now, will it stagnate for years like XMR did and then take off or will it just die?
ZEC and the other Z coins are very profitable right now. If this is stagnation, may we have years of it! (Of course your results with RADEON may be different.)
I will say this -- Z.cash is one of the first genuinely memory hard coins. IT marks the direction of the industry in my opinion.