My home phone is on Ooma now. After years of vacillation telling myself I need to do a bit more research to see what VOIP service is the best while keeping paying $30/month for the land line, I ordered the Telo box for $109, installed it, and was done with it.
I did not buy their WiFi stick because of some problems I read on the Web. And it so happened that the local electronic store had a WiFi bridge (WiFi to RJ45 Ethernet) on sale for $7, so I bought that instead, figuring that if the bridge does not work with Ooma Telo I can use it for something else. It works OK.
I evaluated the delay time by making calls to it from my cell phone, and also from the existing land-line phone which is not really POTs but internet based (service offered by local cable company). The delay with the cell phone is perceptibly less, but still quite apparent. What I really want to do is a comparison between POTS-to-POTS vs. POTS-Telo, but I do not have a POTS line, left alone two.
I should try a hardwired connection between the Ooma Telo and the router to see if elimination of the WiFi hop helps, but that would put the Telo at an inconvenient location. I may try that anyway to see if there's any difference.
After requesting the phone number porting via Ooma's Web site, I was surprised to see that they did it in 3 days, instead of the 2 weeks that they promised.
I am still debating whether to pay the $10/month for premium service. The 2nd phone number is superfluous to us as we still have our cell phones, but the other features look nice to have, such as call forwarding, parallel ringing, or voice mail over the Internet, etc... However, the missus is in her frugal mode, and says we do not need it. I still worry that without support, they may just go belly up. They probably will raise some minimum charge in the future if it is needed to stay afloat than to close shop.