In my opinion, you should do your own research.
Dont pick any crypto just because other people say it is going to RISE TO THE MOON in 2018, or because you saw a 30% increase in 1 day.
I cannot stress this enough, dont do what other people are doing but think for yourself.
Dont be one of those FOMO people.
Be critical and look at each coin from different perspectives.
Give a man a fish, and you feed him for a day. Teach a man to fish, and you feed him for a lifetime.
Bitcoin Cash -> bitcoin with larger block size, supported by some "old" bitcoin community
And any POW coins with no pre-mine & dev-fees sound good
it looks like Bitcoin cash is still far away with both coins.
so in my opinion between Ripple and Ethereum which will be next Bitcoin.