Bitcoin will always have the most marketable name, and for that reason alone, I think it has a good chance to be the "king" crypto or, at the very least, remain in the top 3 to 5 cryptos, for as long as you and I remain above ground.

Second best name for a spendable digital cash is a split for me between SmartCash and Dash. But other than those three, I don't see a name out there that's catchy or self-explanatory (does the name alone tell you what the currency is/ does?) enough to gain mass adoption -- it certainly ain't NEM, hahaha, what the hell is that? No one is going to say at a cash register, "can I pay in new economy movement tokens?"

I think people tend to underestimate the importance of a good brand name/ image in order to gain mass appeal.