JET is the best. If you go with Interac, your training might consist of getting yelled at by a fool named Cedric who has a massive ego and spends a lot of time telling you about what a great teacher he is. He tries, and sometimes succeeds, in getting new employees to break down and cry in front of everyone else by yelling at them and calling them worthless. He does not always treat the new employees like this, but often does. Just the thought of this moron alone is reason enough not to try Interac. Again, JET is the best.