Why is Uniswap V3 better?

Could you please elaborate on the reasons why Uniswap V3 is considered to be an improvement over its predecessors? What specific features or enhancements does it offer that make it stand out in the decentralized exchange space? How does its capital efficiency, price precision, and concentrated liquidity compare to previous versions and other DEXs on the market? Additionally, what are some potential drawbacks or limitations of Uniswap V3 that investors should be aware of?