With potential I think ADA is better than NEO. But on the investment side, I think NEO is better. Because NEO has lowcap than ADA (almost 2x), so potentail grow up I think NEO will dominate.
YES, NEO coins are good and promising. Good platforms and many investors who have NEO coins. I also saw lately the growth of NEO coins was very fast. So I am very sure if the coin NEO in the future will always be a lot of devotees. So if you want to invest better in the NEO coin, but it also depends on your choice because your decision is in your own hands.