"Do you Canadians in general have better results and generally run things a little darker and cooler than us Southerners??"
I'd say in the winter, the answer would be "Yes". When I grew in the basement, my purpuratums were under fluorescent lights (low light) and in the greenhouse, I kept them in the N.E. corner, where it was the darkest. As for temps. In the spring/summer/early fall, my orchid room would consistently get up to 85*F and not go below about 72*F at night. In the winter, the day temps would reach about 75*F and nights would be down to 60*F. The greenhouse would be whatever temperature it was outside during the daytime. I do not have a cooling pad; but, I do have a good exhaust fan and an oversized back vent. Sometimes in the summer, if it was going to be too cool overnight, I'd turn on the heat; but generally, summer nighttime temps in the greenhouse never get below 55*F. Of course, at the hight of summer, the greenhouse can be very warm and muggy overnight.