They are all OK to use, and each provider has pros and cons, depending on the use case. Hetzner is the cheapest; however, your data is stored in Germany or Fin

They are all OK to use, and each provider has pros and cons, depending on the use case. Hetzner is the cheapest; however, your data is stored in Germany or Finland. They have free bandwidth, but you are limited to 10 connections at a time. Backblaze B2 has 4 regions across the globe, storage is $5/mo, there is no minimun retention time, but does have a cost for API Calls(transactions), and in addition charges for egress data(downloads), so your $5/TB is a variable factor, and if you use your data, you may not achieve $5/TB, the cost will grow depending on the use case(there are free levels of transactions and egress) Wasabi is $7/TB and has 13 regions across the globe, with free egress and no api charges. It does have 90-day minimum storage charge, which means you are billed for every object for 90 days regardless of if you delete it before 90 days. In addition, the free egress has limits to prevent system abuse. There is a 30-day deleted storage charge available if you purchase in bulk with their RCS(reserved capacity) storage plan. It's good if you want to store a lot of data that does not need deletion. I have accounts with all 3 of these for different use cases.