Cisco Unified Communications Manager Business Edition is a designed for medium-sized businesses with up to 500 employees and up to five remote sites. This would be a good fit and probably the most cost effective :)
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...