Have you considered as well as VOIPo Residential Unlimited ...
To perhaps offer
VOIPo Residential -SOHO-5000?
It would be a great car race event name also

One UNLIMITED plan geared to the real residential patterns, . . .

. . . and one for the guy looking to run a business cheap
and avoid TOS conflicts doing telemartketing and such
that a Residential Audit would RED-FLAG?

Since it would have something like a 5000 minute cap,
they would know their limits. (You could price them identical.)

Just thinking ...
And looking to kill the how Unlimited is UNLIMITED debate!