NEO is much more better than Ripple, only that ripple has a lot of support from banks, and that is the main reason of why a lot of people think that "ripple" is much more better than NEO.
But neo has better technology, and a lot of support from Japan.
In the stablity wise alone you can see the better specification in the NEO but I think ripple investors already made the big profit with the recent bumps. In November last year ripple was around 20 cents to 40 cents and compare that to present value which is 1.5 USD. We may get the more profit.
Even one of friend bought 500 XRP and more in the last time we see in cents and he sold those all coins in the first week of January.
he made more than 1500 USD profit with that investment he done. So utilize the time do not need compare which one is best.