Cheapest ooma Core VoIP Phone System with No Monthly Phone Service Bills

I have been with VOIP for almost 7 years now - First it was packet8, then Optimum Voice, then Vonage and then SunRocket (the company that went bankrupt) and finally, TeleBlend (many people believe TeleBlend is SunRocket in a different "Avatar").
Now I have Ooma.
The voice quality with Ooma is good (I have slower speed DSL), but not as good as Optimum Voice (with Optimum Online). I am not sure if the reduction in internet speed is the cause for the very slight voice distortion (I notice it initially, but I am not sure if I get "adjusted" to this distortion, or the distortion goes away). Anyway, it is very slight and you barely notice it.
The blacklisting feature is awesome, and I use it quite a bit. The Scout is of no use to me, as I can always use my cell phone if I ever need the extra line.
If I have service for a year, I figured I recovered my investment. If I get more years out of it, I will be really happy (I figured at some point they have to go bankrupt - definitely praying they won't).
Overall, a very good purchase.Get more detail about ooma Core VoIP Phone System with No Monthly Phone Service Bills.