Why not consider using both?
Active Fulls will indeed help you battle unknown VMware CBT bugs, but it does not promise your backups will be consistent or recoverable.
Using SureBackup allows you to perform application level restore testing automatically, allowing you a piece of mind.
Principal Technologist, Global Education Services @ Veeam Software
Veeam Certified Architect #1 | Veeam Certified Trainer #4 [v7,v8,v9] | Veeam Certified Trainer Mentor #1