Well they did what they were paid for in my case, which was the MIFR10 multi/instrument/commercial add-on. There's no question they saved me some time and money and a lot of hassle in that endeavor. If they are not as reliable with longer programs I couldn't speak to it since I never tried one. I am considering their one-week CFI-initial course which is a truncated course designed to consolidate and mobilize what you already have into a checkride-viable package. In any case I would not trust them to do the bulk of the training for a rating or certificate, because I do not think mills are very holistic. Personal relationships with instructors in relaxed environments are more desirable, and schools like these cannot offer such an environment. They are designed to expedite those who basically already know what they are doing into lean mean checkride-taking machines. They do that very well. Generally all the truncated prgrams require you to show up with just about everything already done, like writtens, spin training, checklist memorization, and so on. They add finishing touches, weak-point remediation, and supply the equipment and moral support to what you should already have going for you in the pursuit of a particular rating.