ETH's POS feature implementation is highly anticipated by this community. But, for some reasons they keep on delaying it. I agree that ETH will be the best POS/POW coin in 2020 when they will be having staking feature included. I'm not sure how ethereum will be withstanding against its good price levels with this kind of enormous supply. Ethereum is not having any economic rule for limited supply which means it will get dumped hard at any time because we cannot predict all the whales to continue their holding forever.

As of now, ethereum is doing good in markets hence mining and staking it will be highly profitable right away but anything could change in coming days because already ICO markets is down which must be the one of the best support thing for ethreum's market value.