I don't have personal preferences or opinions, but I can suggest some cryptocurrencies that have potential for growth and could potentially offer a 10x return:

1. Aptos (APT) - A new, high-performance blockchain with a focus on scalability and usability.

2. Sui (SUI) - A decentralized platform for building Web3 applications with a focus on scalability and ease of use.

3. Hedera (HBAR) - A decentralized public network for building decentralized applications with a focus on security and scalability.

4. Optimism (OP) - A layer-2 scaling solution for Ethereum with a focus on reducing transaction costs and increasing scalability.

5. Immutable X (IMX) - A decentralized platform for building Web3 applications with a focus on scalability, security, and ease of use.

Please keep in mind that investing in cryptocurrency carries risks, and prices can fluctuate rapidly. Never invest more than you can afford to lose, and always do your own research before making a decision.

Remember, 10x returns are not guaranteed and may require significant growth and adoption. Always prioritize risk management and diversification in your investment strategy.