Use AIM Call Out
If you're fed up with Skype try AIM Call Out. I've used Skype before they were bought by ebay, but since they've been bought out they've become like every other e-bay company. Bad service and more expensive.
Recently I've started using AIM Call Out. There rates are better than Skypes plus you don't always have to have your headset and mic if you use their web connect feature (connects 2 phones directly). They recently added SIP support as well.
Biting the hand that feeds IT
