I have ackies and an ornate. If you don't want an enormous lizard, ackies are great in an enclosure like the size you mentioned. Anything but dwarf species and that size is waaaaay too small.
If you're interested, though, I prefer the ornatus.
Chris
EDIT: By the way, 1nstinct, I just love your female argus. Must have been really hard to see her go...