The "best" cryptocurrency can vary depending on your criteria, such as investment potential, use case, or technology. As of now, Bitcoin (BTC) is often considered a strong option due to its established status and widespread adoption. Ethereum (ETH) is also notable for its smart contract capabilities and decentralized applications.

Other cryptocurrencies, like Binance Coin (BNB), Cardano (ADA), and Solana (SOL), have their own strengths and unique features. It's important to conduct thorough research and consider your own goals and risk tolerance before investing.