ETH stands more chai of going upwards than the LTC because ETH's max plateau is still not reached. Apart from his LTC seems to be hiked too much with its recent market capitalism. What I think is ETH is getting its upwards movement done very slowly but steadily. And such coins are more liable to higher rates in the future than the LTC which had its upward surge too quickly. This will lead to panic sell very quickly because it creates fear of loosing when something is spiking so fast, they don't have time to think on it and leads to that worst selling stuff. So what ideal investment would be here is ETH according to me. If we have to put money at this very date then we should keep it into ETH. Thats my choice and the above one is the reason for its selection.