I would say bitcoin. Its as we all know the king of all cryptocurrencies and it leads the charts always. Litecoin was the first fork of bitcoin. It had some great technocally changes, and it was always in the topten of the altcoin charts. But in the past months, you dont really hear much from the developers. Also they cancelled the long awaitet litepay. So actually the community is not amused about the activity of the developers.