Yes dewarg is correct in saying that the regulator is very vigilant.
All instructors are monitored by Transport Canada based on their students flight test results. If an instructor's pass rate drops below 80% Transport investigates and if nessecary takes corrective action. All new instructors must be monitored by a senior instructor. sort of an apprenticeship program.
Transport is making a huge effort to standardize training and testing to eliminate regional differences.
The Air Transport Association of Canada is also making a effort through their members to go beyond the minimum standards set by Transport Canada and provide exceptional training.
As for Navexs not only is the scenery great but so are the people, I have had people lend me their car to drive into town to get some food. Well worth looking into Canada as a place to train or hour build.