Has anybody tried yetitel phone ? How is the connection?

http://www.yetitel.com/index.php

Sometime is fine but not bad but not gooooooooooooood too..

I used this last week for the first time in my life. First call was horrible (I wasted 15 minutes) . After an hour I gave another shot and was fine. Did I mentioned horrible??

Yeah, I have been using this yetitel service and find it okay. As mentioned previously sometimes it has good connection and voice is clear but the other time its bad. Fed up with using all those crappy cards, I rate this yetitel satisfactory all in all until this point.