Are these pretty decent quality when talking to people through iChat? I have messed around with it at the apple store with photobooth and it seems pretty nice, but how is it over the internet through iChat? Is it as good as a quality as when using it with photobooth? Is there lag? I plan on using this to keeping in touch with my family/friends since I am off to grad school in norcal and my family/friends are from socal. Thanks for any replies.