For peace of mind I'm still using zfs (since the last 15+ years) but I'm definitely not impressed by the performance...
Depending on your current setup, dRaid can give you quite the performance boost nowadays, since its data slabs are spread out over all disks in the array its using all of the disks bandwith combined.
Different tools for different jobs; use ZFS for your data store and ext4 for your primary drive.