Jonesy920x
Registered
I think the IANTD manual is the worst of the bunch, although Matt from Protec has written a more up-to-date version of it. Also, IANTD appears to defer accelerated deco and O2 use until their Technical Diver course, but I'm not sure if this an agency thing, or just the way things work out in Mexico.
From what I've been told and read on thier website it is an agency philosophy.