There is a tremendous difference between the two BCs, the Glide plus and
the Knighthawk. The GlidePlus is a jacket style BC while the Knighthawk
is a rear inflation. I started diving with a rear inflation
(Knighthawk)about a year ago and love it. Once you put it on and adjust
it, it's set. There is no squeeze as you put air into the BC. Also,
there is no rubbing under the arms. After having dived with the
Knighthawk, I would not go back to a jacket style.

I haven't tried either of the ones you mention, but I have similar
dimensions to you and I love my XL Zeagle ranger.  It fits like a glove and
is super adjustable.  You might want to check it out.  Oh, by the way, it
too is a back inflation style BC.

C Guynn

I am a recreational diver only and so far have only dove on protected reefs.
On all of my dives, I cannot remember putting anything in the pockets of my
BC. Lots of pockets are not necessary, but the Knighthawk is pretty sparse
on them and I wish it had more. For that, I guess you move on to the Glide
Plus. It looks like the same BC, just with more pockets.

I did find that the Scubapro Knighhawk is included on the U.S. Navy's
"Diving Equipment Authorized for U.S. Navy Use (ANU)" list at URL:

http://www.supsalv.org/anu_page.html

It is reassuring to know that the Navy approves of it. Therefore, it must
have gone through some Navy testing to make their list.

I wish that my dealer had both the Knighthawk and the Glide Plus in stock
for me to try on for fit. Since they didn't, I am probably going to go with
the Knighthawk since both the dealer and the Navy recommend it.

I already have an Air II backup regulator from my double black. They are
going to service it and install it on the Knighthawk for me.

Any other comments on BC's and diving in general for XXXL sized guys is
welcome.

Thank you!