One of the most popular comparisons on our site is Commvault vs Veritas NetBackup.
One user says about Commvault, "[It is] A very stable and scalable platform (you can backup/restore/protect a couple of MBs or hundred of TBs as well from the same console/platform)."
Another user says about Veritas Backup, " The product itself is very stable. Most issues with stability come from running too many parallel operations and the hardware itself can’t handle it."
In your opinion, which is better and why?