Yeee-ouch ... ok ... maybe Nav Canada isn't the most amazing option!! But the starting salary with Nats isn't brilliant and it is 6000 miles from his present position! Travel costs for interviews with Nats will cost.
Not sure if they reimburse travel costs, Eurocontrol do but not sure if they will from that distance.
Eurocontrol look great to work for, good cash and Maastricht UAC seems like a good centre - from what I saw
S.P