I have never had R2 unless I had it by a different name. Does it smell like pine by any chance?
I can say IMHO M39 is commercial garbage. Now Freezeland on the other hand was one of the best outdoor strains I have ever run. It also did great indoors.
There use to be a breeder out of the Annapolis Valley roughly 15 years ago who was doing some really great things with some lesser known gear. Had strains called White rabbit, Northern Rabbit, Armageddon, and a buncha others I cant remember.The best cross I ever grew outdoors Sweet tooth x Champagne . It was also from him. I sold that strain for top dollar as indoor each fall.
All his strains were in glass vials with pink tops and had the strain written on a white label wrapped around it.
Cheers