Can anyone recommend a good USB phone and which VoIP to use in Xubuntu? Nothing too fancy, and not too expensive either, mind. I was wanting to use it for cheap/free phone calls using my PC, which runs under Xubuntu.

I'm too fussy if it's corded or cordless USB VoIP phone.

Everything I've tried searching for in Canada thus far is either kind of overpriced with way more features than I really need. And I don't seem able to find a site in Canada that says "works with Linux" on any of their VoIP phone listings.