I realize I suggested a wireless service even though you weren't looking for that. Regardless, I have tried Sprint, MCI, ATT, SBC. All of them are eventually expensive. Many of them have 'special offers" which , you soon find out, do not apply to your particular caller profile. The least amount of problems I have had was with ATT. But regardless, I have gone wireless. I cannot see why it would make a difference unless its for an office.