We switched to Brighthouse (formerly Roadrunner) phone service, and like you, saved a good chunk of money (it's now our internet, phone, and cable). As mentioned, the only time we have trouble is when EVERYTHING Brighthouse has trouble. It's clear as a land line (actually, clearer for us, since the land lines inside the house were run in the 1960s), and came with "extras" we never wanted to pay for with the regular phone service--call waiting, caller ID, and voice mail. We used to use our cell phones for everything (we live in a different area code than where we work, so each call to work on our land line cost us $.25, both of our families are long-distance calls); last month we moved to a smaller minutes package on our cell phone because we've started using the house phone for most of our long-distance calling.
Be sure that your provider's service has reverse 911 (where if you dial 911, they can see your address at the dispatch center) if that's important to you. Not all of them offer it. Here's a Consumer Reports breakdown from January 2006, to give you an idea of costs (all of them cover U.S., Puerto Rico, and Canada):
AT&T CallVantage: unlimited calling plan $30/mo; limited calling plan is $20/mo for unlimited local calls, 4cents/min for long-distance; free voice mail; $5/mo for additional numbers; through cable or DSL; available nationwide; $30 activation fee; no termination fee if canceled within 30 days or after 1 yr; do-it-yourself installation
Optimum Voice: unlimited $35/mo; no limited plan; free voice mail; additional numbers not available; cable (no DSL); available in NY, NJ, CT; no activation fee, no termination fee; company installation
Time Warner (Brighthouse): unlimited $40/mo; no limited calling plan; voice mail $3.95/mo; additional numbers not available; cable (no DSL); in various markets through 27 states; no activation fee, no termination fee; company installation
Verizon VoiceWing: unlimited $35/mo; limited calling plan $20/mo for 500 min, 4cents/min for extra time; free voice mail; additional numbers $8/mo; cable or DSL; available nationwide; $40 activation fee if you order by phone, no activation fee for online orders; no termination fee if canceled within 30 days or after 1 yr, otherwise $20; do-it-yourself installation
Vonage: unlimited $25/mo; limited calling plan $15/500 min, 3.9cents/min for extra time; free voice mail; additional numbers $5/mo; cable or DSL; nationwide availability; $30 activation fee by phone or online, no fee at store; no termination fee if canceled within 30 days or after 1 yr, otherwise $40; do-it-yourself installation
Challenge Goals:
*10 minutes of unplanned exercise five times a week
*Gym time twice a week
*Socialize at least once every two weeks.