Price wise. XVG. dirt cheap and with Wraith lots of options.
Zencash is a great platform and secured nodes will bring passive income.
Spectr is probably the best when it comes to features.
More then 1 coin will make it. Coins with dev funding are the ones I would bet on.
Zencash devs get a % of POW revenue. So they are funded. If the project has to pay for devs or free work... well, who wants to work for free is my question.