Amazon S3 clients for the Mac

I've gone through all of the apps I could find for Amazon s3 and they've all let me down.

They just can't be trusted to just run a big upload, always running into trouble almost immediately.

It looks like s3cmd is closer to what I want.
-> automatically set the ACL's (what is the problem with this!!)
-> huge batches no problem
-> silent running option
-> sync option
-> update only option
-> delete if local (original) is gone

I'm backing up 220 GB of raw photo files.