Like Rick said , both camps have a complete different personalities, spring is generally wet and cold, fall dry and hot, I personally like the fall as you can hunt other species as well, deer elk wolf and grouse but as far as which one is most productive?
Boy thats a tough call as things change from year to year.I have been working for and with Gary for about ten years and have seen lots of different seasons. Gary can be a bit hard to get a hold of but send them an email and Sue will ask Gary and get back with you . You will have a good hunt on some of the most beautiful country ,with a solid guy if you book with Gary
Spring tends to fill up fast so if thats your choice, best get on it.
Here is a bear I shot a couple of weeks ago , I had a day to play before clients came in.