Mate good to hear that you have tried other methods, unlike a lot of people training dogs (I would include myself to a degree) who have not explored many other options, its good to see someone open minded enough to try.
I am probably a little biased only because I have only really trained specific dogs with specific temperaments and drives. A little old school I suppose, but it has been successful with my old Akita and I am seeing good results with Rex after a week. Just having a little trouble with his prey drive, or lack thereof! But hopefully I can promote it because I would like to start him doing some man trailing. Any suggestions?
As they say "different horses for different courses".
I will see how Rex develops using PR and will keep you all updated.