I would just look for a good VoIP service that serves your area with a local e911 service. I use ViaTalk here in Chattanooga TN area, works great and only cost me $22.95/mo with Free long distance anywhere in the US or Canada, all the bells and whistles, cheap International rates too. Comcast does not yet offer their Digital Phone service here but I am so happy with ViaTalk and cheaper too, I will stick with them once Comcast offers their phone service here.
Once I build my new home in a year or two I may drop my Comcast service down to just Internet and Limeted Basic TV, go back to E* for the bulk of my TV and keep ViaTalk for phone.