Not every tool can be easily configured to write to a path / key. Once you buy into having multiple buckets / spaces. It's hard to go back ;)
This doesn't change the price ratio at all ($0.02/GB) but will allow for much better flexibility
* Different buckets for environments / projects
* Different buckets for infrastructure & ops
* No brainer to create a space for moon shot prototype
Currently I'm only using 1 space for production assets. But I keep many small buckets in S3 because it's cheaper that way.