We have many people that we need to keep in close contact with overseas, specifically Belarus, and iffy connections are not what we need. We have enough things to add stress to our days and not being able to get a hold of family and friends overseas is not one that we need.
Tel3 has much better support and call quality, as well as the ability to look at your account on line. If you are making international calls and the likes of Skype are not a real possibility then give Tel3 a try. If you have consistent internet access then give Skype a try. Free is good! Very good!