As I have posted many times, I am a big Arq fan.
I have, in the past, had to restore a substantial amount of “lost” data, which at the time was going to Amazon Glacier, and the restore was flawless.
A second time, my daughter had moved out of state for school, and of course the second day she was there, her MBAir died. (Turned out to be a failed system board.) Fortunately, there was one identical MBAir in stock at the Best Buy not far from her (this was a small town in Mississippi, so I was glad there was one available!). I ordered it online, she picked it up, did the initial setup, and installed Arq. We set up her restore, because we had had Arq on her computer as well, and by morning everything was restored and she was up and running.
In terms of storage costs, I use the standard Arq app, not Arq Premium, and I bought a lifetime Arq license years ago. I am currently sending my data to Wasabi, but to my own Wasabi account and data buckets.
I am considering moving to Glacier Deep Storage. It looks like it would be very cheap for my roughly 2TB of data. With GDS, it takes up to 12 hours to retrieve data and there is (I think) a charge for the outgoing transfer, but for the “emergency house burnt down” storage it’s a reasonable way to cut costs.
I do have BackBlaze as well, because my data is worth enough to me to pay for two online options just in case, but the downside to BackBlaze is that if you don’t want to pay extra for the 1 year or unlimited duration storage add-ons, if you lose something and don’t realize it for >30 days, it’s gone. With my Arq storage, I don’t have that issue.