I've used Parallels for many years, simply because it was the first VM app available, a bit before Fusion became an option.
After all these years, I'm in the process of switching to Fusion. Why?
1) As many have noted, the 'mafia-like twisting your arm to do the upgrade' annual Parallels update has been very annoying.
2) I have had a number of ‘unfortunate events’ where my VMs have ‘gone missing’ that has resulted in a lot of frustration and loss of confidence in Parallels. Perhaps what happened was my own fault for some obscure reason, but on several occasions I’ve started up Parallels and had no VM to boot - the Windows instance was simply gone and it could not find the VM image to reconnect to. Trying to restore from a Time Machine backup was not successful - it was like the image was never backed up. Once after doing an upgrade to a new MacOS version, every VM image was gone and undiscoverable/unrestorable. I’ve never had a Linux image go missing, only Windows images, so your milage may vary when using Parallels. For me, I’ve had enough and I’m going to at least try VMware Fusion - I have nothing to lose at this point in time.
3) Big Business seems to love VMware enterprise products, so it seems like a well resourced company for the long term.
After all these years, I'm in the process of switching to Fusion. Why?
1) As many have noted, the 'mafia-like twisting your arm to do the upgrade' annual Parallels update has been very annoying.
2) I have had a number of ‘unfortunate events’ where my VMs have ‘gone missing’ that has resulted in a lot of frustration and loss of confidence in Parallels. Perhaps what happened was my own fault for some obscure reason, but on several occasions I’ve started up Parallels and had no VM to boot - the Windows instance was simply gone and it could not find the VM image to reconnect to. Trying to restore from a Time Machine backup was not successful - it was like the image was never backed up. Once after doing an upgrade to a new MacOS version, every VM image was gone and undiscoverable/unrestorable. I’ve never had a Linux image go missing, only Windows images, so your milage may vary when using Parallels. For me, I’ve had enough and I’m going to at least try VMware Fusion - I have nothing to lose at this point in time.
3) Big Business seems to love VMware enterprise products, so it seems like a well resourced company for the long term.