Ripple (XRP) without a doubt! It has far greater potential than any other cryptocurrency available today.

It is quite conceivable and very probable that XRP will return to its all time highs of ~$3.00 that the coin enjoyed just a couple of years ago. That will be a 10x multiplier of its current price. So even if Bitcoin were to return to its all time high of ~$20,000, that would still be only a 2x multiplier. I will gladly take 10 times my money vs only 2 times, any day of the week. Who wouldn't?