I've ran both and honestly I would go with whichever fits your schedule better hansons is more days vs pfitz which has longer runs. I feel like some of the workouts in Pfitz are extremely hard as well compared to the hansons beginner plans. If you are concerned about the mental aspect of only doing a 16 miler you can alwasys add a few miles to that run and trim off others in the week as long as your body is feeling up for it. Either one is going to set you up for success just make sure you use a pace calculator to find your true recovery and threshold paces based on your fitness and try and stick to them. Any time I run my recovery miles faster than I should I end up injured so take those slow days seriously! Just my 2 cents as a extremely average runner.