Nice feature Obivoice has -
Spoof your outbound caller ID based on a number you own. Forward all your calls to a number we provide.
I was looking into options to replace my Google Voice, with keeping my number. Obviously I could try to port my number, but issue with that is, I don't want my number stuck with a different service, and decide the service is not good, or too expensive ect... I have found only one other service that is supported by Obi devices that allows spoofing your outgoing number - CALLCentric. The issue with their service is that their plan with 500 min is $6.95, 1000 min is $12.95, and Unlimited is $19.95. These prices are still cheaper than typical phone service, but not too apealing