I'm on Orcon at home, using their Genius plan, which is a naked DSL with VOIP calls. 30GB of data, and free local calls, $70/month.
We HAD been using Telecom but they were dicking us around :an!gry with line static not being fixed and all sorts of dramas, so we swapped to Orcon. We were with Orcon even before Genius. They were great then too.
It was a real pain trying to get Genius set up, but now that's it's up and running, I wouldn't switch back. With Orcon, we have NEVER had speed issues. Always running the max that our line can support, and not a byte less. :thup:
VOIP requires power. If you are worried about losing power, get a UPS. In a natural disaster, phone lines go dead just as fast as power lines.