I have far better experience with Google Voice quality when calling phones, but also find it disconnects with gvoice-gvoice so prefer Skype when possible. But with Skype-Skype calls, video conferencing etc and the ease of use with older family members, Skype has become so useful quite frankly I'm afraid that if Skype dies we'll put thrown back into the land of having no single point of guaranteed communication between all types of computer users. I hope that Skype succeeds for this reason alone.