Well, I've done a bit more reading both from the iBnet website and some of the forums that talked about it and also the english translation manual done by Mike Maddox. What I personally take away from the info I've read is this:
iBnet setup is high maintenance
iBnet does not work with FS2002 or FSX
iBnet does not display older 2002 aircraft
Along with that, if you are using an older version of iBnet you have to generate ini files to allow for animations/lights/smoke effects, etc on your own. (if you have the newer version it's done automatically).
Again, this is personal opinion, but I see now why FSHost has reigned supreme for as long as it has. . .it's simple to setup and simple to use. iBnet is not and so despite the "no lag" ability of the software, most multiplayer servers simply find FSHost a better option.
One thing I would suggest to the folks who have the iBnet website is to streamline the downloads page so it's easier to figure out, ie:
There are two "English version" manuals to download (why). . .pick one and dump the other.
There are several versions of the iBnet software for download (why). . .if the newest version is the best get rid of the old versions.
With FSHost (FS9) or FSHost Client (FSX) you download one file, install it and fly, if iBnet ever gets to that state of simplicity I might give it a try.