Sky-Watcher do a FF for the ED80. Exact same optics as Orion. (Same factory, different stickers.)
http://ca.skywatcher.com/_english/03...il.php?sid=180
They also sell a FR for the ED80-120 range. These are also sold Orion badged. (Again, same factory.)
http://ca.skywatcher.com/_english/03...il.php?sid=182