I used them for both the ATP written and FE written (All ATP's) near Atlanta. It was awesome. Get in, get out. Life is too short to spend studying hours for the BS questions in there.
Good luck!
PS...there is actually about 2% info that you may need in the future from those tests/courses, especially for a 121 carrier. I always keep a FAR/AIM in my flight kit and grab it when I need it.....performance is automated and we have a meteorologist on staff 24/7.