In addition to teaching a few thousand standard first aid and CPR students, I taught a few 50-hour Wilderness Advanced First Aid classes through the Berkeley Red Cross. It carried their standard Advanced First Aid certification but we were clear we were making it harder so it self-selected for the ski patrollers, Scoutmasters, and aspiring round-the-world sailors who wanted the best prep they could get for cheap.
Like any course, it hinges hugely on who the instructors are and how well they teach. From afar, the quickest assessment I would suggest is to look at the schedule and the more practical sessions they have scheduled, the better. Better yet, are practical half-day sessions where they bring in volunteers in make-up and with a script that you have assess and treat cold turkey.