When comparing Disk Utility vs ecryptfs, the Slant community recommends ecryptfs for most people. In the question“What are the best file encryption tools?” ecryptfs is ranked 10th while Disk Utility is ranked 11th. The most important reason people chose ecryptfs is:
The entire user home directory or folder inside can be encrypted and unlocked during login.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Native OS X support
It offers the best integration, ease of use and support with OS X.
Pro Disk image and volume encryption
You can create a disk image that requires a password to mount. It can use a different filesystem than OS X, like exFAT, that can be used to move files between Windows and OS X. Additionally, you can encrypt file volumes by right-clicking and selecting encrypt.
Pro Encrypt your home directory
The entire user home directory or folder inside can be encrypted and unlocked during login.
Cons
Con Mac only
Disk Utility is available for OSX only.
Con No single file encryption
Can't request a single file be encrypted.