There is currently no difference in functionality between the two versions other than the version of Monolog used.
Features
Log to a file
Send logs via email
Emailed logs are deduplicated and buffered
Configure minimum logging levels for files vs email logging
Add extra visitor data to logs: user_id and username
Add extra web data to logs: current request URI, request method and client IP
Test tool included to verify that logs are being written to disk - go to AdminCP > Tools...
