Interesting idea. Worthwhile if going offsite backup for sure.
What are you buying then?
I think it comes down to luck, unless there is a particular issue with the recent Reds (apart from SMR issue). Bad batches can happen to anyone. The only thing I feel abit skeptical about now is longevity of helium.
Was looking at Ironwolf but didn't like the idea of higher power consumption and heat, otherwise looks good value.
you can either read the thread in here from page 1
or go Synology communities (if you do not trust the people here).
either way will tell u more.