I haven't done a ton of work with 100tb.com, just a couple servers with them a few years back. It's great bandwidth. They're a SoftLayer reseller, so the nextwork blend is pretty good. I never got close to the 100tb cap, so am not sure if they'd impose some metering if you're doing it on a recurring basis. I feel like most of the people I've talked to about 100tb.com have gone in with the mentality that it's nearly unlimited, but end up using less than 1tb. If you aggregate across a ton of resold servers, I bet it's possible to make the model work pretty well.