Have a bit of a research update (more for everyone, not just you):
I discovered that Vonage's "unlimited" calling package is capped at 3000 minutes/month.
I re-refreshed myself with Future Nine's Future 5 calling plan. It's 2000 outbound + 2000 inbound (4000 total) a month for $60/year, unused minutes during the previous two months roll over to cover overages during any month. Billing over that point is 1¢ a minute.
I'd posted details on this plan a few months back, but my memory is imperfect at times. You might want to check your Vonage call records, but odds are, you'd probably fit nicely under those limits without problem. The only downside is no outbound Caller ID
Name for numbers outside of CA/PA/VA/WV/DE/MD. Number porting is $20, $5 to set up e911, and you can order a pre-configured ATA for $40 from Nitzan.
Here's the numbers: $72/year (with e911 service), $65 for number porting, e911 setup and pre-configured equipment at F9. (I've been with them for a number of years and have been happy with them and the service quality - but I also bring and configure my own equipment.) Now, let's factor cost for the next five years and decade, assuming no rate changes.
Vonage runs $192/year approximately at their "discounted" rate of $10/month+taxes (figuring $16/month). Cost next
five years - $960; cost next
ten years - $1920.
VOIPo runs $185/year approximately, but they also provide the ATA for free, port for free, and give you a free year of service up front with the initial two year order. Cost next
five years - $740; cost next
ten years - $1665.
Future Nine runs $72/year approximately. Cost next
five years - $425; cost next
ten years - $865 (both numbers include the initial $65 setup cost, the last number assumes an extra $80 for at least
two more replacement ATAs - worst case scenario type of thing).
If you can make F9's numbers work for you and you potentially don't need outbound CID Name, the savings numbers are even more compelling than VOIPo's, which stays steady at about a lifetime savings of around $200-250-ish. Setup with a new provider can always have a small hassle curve initially, but once it's done, it's done and things usually roll smoothly from that point. A consistent ~55% savings between providers (even if that involves buying and configuring your own equipment) is nothing to sneeze at. Just something to consider.