With RAID5 you'd have higher probability of data loss. Remember, you just loss the only redundancy you had, brining your redundancy to same level as RAID1 with

With RAID5 you'd have higher probability of data loss. Remember, you just loss the only redundancy you had, brining your redundancy to same level as RAID1 with failed drive. ... except now you have more drives that can fail. With RAID6 yes, you can still fail one more time and still keep your data, which is why it is recommended. Data safety wise I'd go RAID6 -> RAID1/10 (particularly linux implementation can do raid10 on odd number of drives which is nice) -> RAID5