Hotfeet,
I took two courses with AAI this past summer. I took their Alpine Mountaineering and Leadership Part 1&2. I would say in the least these courses were amazing, I learned a lot about climbing. All of the guides I had were professionals to the max. But I don't think I would go to Denali with AAI. All of the guides I had, told me to sign up with other companies that pay their guides appropriate wages. That is the only negative about the courses was how much all the guides complained about their wages. It seemed to be a pretty hot topic, and when we would sit around camp and other guides from courses would come over, they would all joke around about their pay and they made fun of the boss a lot. I am going to Denali with Alpine Ascents. I made this decision after I found out that AAI guides encouraged their clients to dump food and gear into crevass's on the mountains and their low success rate on Denali. I suggest taking their intro to mountaineering courses, but would stay away from Denali. Go with a company that practices Leave No Trace and actually sticks to it. You can call up the Park Service and they will tell you just about any information you would want from Denali guide companies. I hope this helps, and hopefully see ya up there this spring!