Not saying anything negative about AFT, they cover the ATPL subjects well, but what Sparse (PG) has shown me covers Nathan's equivalent in [I]much[I] more detail. Considering a very large organisation offered well into six figures for his material and a major manufacturer (read as one of two) was
very perturbed when he departed a previous employer, well........
Peter's background is as a 727 QF Skipper and his presentation of ground theory is the best I've seen.
Keep an eye out for the 737 sim (in the hangar being assembled with possibly a 320 to follow) and LOFT / Multi-Crew courses on offer.