Recommended service for my circumstances

Hello,

I currently have Comcast's Triple play bundle with phone service being a part of it. I am seriously considering dropping the phone part of it so I can buy a modem that is not fused to the phone service like my current Comcast modem with my current set up.
I have a cordless phone system with a base unit, answering machine, and handset that connects to the unit, and three other handsets all with pretty good reception.
I have a phone number I'd like to keep, but it is not mandatory. I have unlimited local and long distance as part of my service, and I'd like to stay with that if possible. The reception is clear and I do not have a problem with dropped calls.

If I were to switch from Comcast, I'd like to know the top three recommendations for home phone service to go with my existing phone equipment.

I am not adverse to paying a monthly fee, or buying a specific piece of equipment to run it via my internet connection.
I am not looking to spend more than I have to, but am willing to pay for quality sound, dependability, etc.
So this is not a thread where I am looking for a cheap service at the expense of quality.

Please advise.