I've got Btrfs on my desktop for the OS drive cuz that was what Fedora recommended when I was installing it. It took a bit of effort to get snapshots working properly, but other than that, I've had no issues with it at all over the past year. I've got an exFAT drive and an NTFS drive in there that are kind of leftovers from using Windows. I've been thinking about reformatting the exFAT drive to ext4 or something, since all it really does is store games, and having the ability to symlink to it would be nice.

I've got a TrueNAS machine as well and that uses ZFS for pretty much everything.

I use Btrfs for my root partition to be able to rollback if something goes wrong after update. XFS: in all other cases, since I hate the lost+found directory on ext4. Although I don't think there's any significant difference between ext4 and xfs in performance and reliability.

ext4 because I value my data and don't want to lose it. I used to mess about with ZFS for mass storage but it's a university course to learn how to use and have decent performance.

I used to use XFS, but ext4 caught up.

And I used to use XFS... on something other than Linux.

NTFS for the drive I had before jumping to Mint. Currently reporting several hundred gigabytes free, but refusing to make any new files, because... I don't know. I'll deal with it after an upcoming move.

The OS / home SSD is ext4, and so is the fat loud hard disk I recently purchased through an entire month of fighting Amazon over gift cards.

ext4 on everything except external drives where I put NTFS.

Btrfs on my Linux desktops and laptops, ZFS on my server, APFS on my Apple devices I guess

EXT4 on PC, ZFS on my server and APFS on my mac

• Ext4 main computer
• NTFS for hard drives and stuff that need to be shared with other people using Windows
• BTRFS for the NAS

Btrfs, but if I'd start from scratch today I'd go for bcachefs.