I've got Nexus (cheapest of the three programs and gives you all the benefits) but only downside is you have to go to a Canadian Border crossing for the final interviews. I scheduled for the Champlain, NY location. On the US side you meet with both US and Canadian agents, plus get your fingerprints taken. Then you cross over to the Canadian side for the iris scan. Because you cross the border to finish the process, everyone needs appropriate documentation (passports, etc) to do that also. Appointment times you set yourself, but you may need to plan on scheduling them several months out to get three at about the same time.