Be carefull. Quebec caribou outfitters in general have a pretty bad reputation right now. 3 in the past couple of years have gone "out of business" keeping all of the deposits and payments they had received from U.S. hunters. Some have then resurfaced under new names. Plus the Q/L caribou herd is in a big decline in numbers. I haven't read that they really know the reason why.
I personally wouldn't consider Quebec in fear of getting screwed. If I had to go to Quebec, about the only one I would consider is Jack Hume Adventures. The owner (Richard Hume) posts alot on BowSite and seems to be pretty honest.
Best of luck which ever way you end up going.