Nakivo Backup and Replication, easy set up and reasonable licensing

I was looking for an alternative to the well known VM Backup Software from V****. Not just because of their recently changed licensing and increased pricing. I'm doing local backups only of 2-4 Servers (Sockets) with 10+ VMs. I was looking for perpetual, per socket licencing. Nakivo is easy to install and setup, and can also be used with Linux or comes as a ready to use VM-Appliance, which is what I use. My performance test showed Nakivo Backup was slightly slower (10%), which doesnt't bother me much. Unfortunately I had problems with quiecing on my old Servers running ESXi 6.0, but since ESXi snapshots are also not working this Problem is rather elated to my used Hardware. I think the problem may be resolved if upgrading to 6.5 /6.7. Therefore I decided to use Nakivo only for with my new Server(s) which are running ESXi 6.7 and will replace my old servers in the long run.