Okay, I'm pissed (but not at you): need MU backup solution stat

So I've been using PluginBuddy. As far as I recall, the assured me that I could backup an entire multisite install and restore it. It's got loads of features, including domain migration, etc. But...

When I tried restoring one of my multisite backups, it all went to sh..bad. They're now claiming that network backups are very beta and shouldn't be relied on. That's after months of thinking I was safe with that product.

Snapshot looks nice, but can it do a full multisite backup, or just the database? Can it be set for programmable, offsite saves? Is there a good, complete, multisite, ENTIRE site backup tool that will backup all the files, themes, modifications, and data from a full multisite install, preferably automagically and preferably to something like an S3 account?

Please advise. I'm now seriously nervous about my installations.

David