I recommend openSUSE Leap. Very good distribution. It's mostly based on their enterprise server one so the stability should be very good. Also, the OS partition

I recommend openSUSE Leap. Very good distribution. It's mostly based on their enterprise server one so the stability should be very good. Also, the OS partition (not data) is using btrfs and there's a snapshot after each package upgrade so if there's a problem, you can boot (and restore) a previous snapshot :)