Sydney Hoeltzli wrote in
:

Similar but not the same. For example, it doesn't indicate
if a given airport is class G or class E, far's I can tell.

Plus of course it doesn't have the other AF/D stuff --
preferred routes, restrictions on navaid service volume
etc.

Did you look at the others in addition to AOPA? I haven't
looked in detail, because it isn't that important to me, (my
employer supplies an A/FD and a place to keep it) but they claim
to have the full A/FD. For a price, but then everything has its
price, doesn't it?

--
Regards,

Stan