NEO is definitely interesting. But I expect mass adoption in mainly China.
If you're looking for a platform that will overtake Ethereum which is plagued by technical and architectural decisions... well, I've written a short post about what I believe will happen: https://steemit.com/cryptocurrency/@valderrama/stratis-will-beat-ethereum-in-2018
Are you invested in Stratis?
You bet I am. But it has been stagnating recently. Their latest developer update wasn't exactly groundbreaking, but I do have faith. Stratis does seem to have a better solution with sidechains.