We have a 79 series dual cab and we have just begun towing our XC3 (~3300kg loaded). I guess I don't have much experience to compare, but as a new van tower, after about two hours behind the wheel, I got the feel of it and it towed fairly predictably. Now, a 200 might sit better on the road and be easier... I am not sure. Mine's lifted with mud tyres etc. so it's not going even run as stable as a stock example (although stock suspension is terrible towing).
On the nicer highways, I probably sat at 90-95kph. Anymore than that and diesel disappears at a fast rate! I do have a remap/exhaust/intake done, so there was no problem with power going up the Toowoomba range and other long steep inclines. I am going to get a brake booster as I feel the stock brakes after a lift are not great.
On the back roads, we were between 70 and 90kph because of all the ditches, narrow asphalt, hills, turns etc.