Both of these coins have good movements so the two coins are indeed good and continue to increase. Many communities will continue to maintain and benefit from both. I think investing in both will make us more observant in trading and making a profit.
ETH and LTC are good coins, but I think ETH has more potential to provide pfofit for you, so I think you better set aside your ETH bigger than LTC.
it's just my advice because in my opinion ETH is still the best and has the greatest chance of being able to rise high.