The biggest issue with third party backup tools is that if the company suddenly goes out of business, or you lose your license, you could loose the ability to restore from those third party backups.

Litespeed has a free command line tool that allows the backup to be translated back into a native SQL backup. Check to verify your current third party backup vendor has something similar. Then make sure to download multiple copies of that tool in multiple places and keep it updated so that if the company goes up in smoke, you still have access to all that data.