Basically Bitcoin and Litecoin use fundamentally different cryptographic algorithms: Bitcoin uses the longstanding SHA-256 algorithm, and Litecoin uses a newer algorithm called Scrypt On the other hand if we see the Max Supply of BTC that is-21,000,000 and LTC Max Supply-84,000,000 which is too higher than BTC. So as now BTC Total Supply-18,634,812 which is very near to fill the whole coins. But on the LTC Total Supply-66,525,315. So if you compare the price, there BTC is too much advance and after fulfil its max supply its price will be high to high that did not happen to LTC. So i think BTC is best always.