On all of the Fuso truck forums I frequent there seems to be reports of ongoing engine/electrical issues with this 3.0L model.
From memory, there were a multitude of issues with the Duonic transmission, especially in the earlier days. I could be wrong, but I think that this ultimately resulted in a 100% recall of the gearboxes in the US/Canada and was arguably one of the main reasons Fuso pulled out of the US market. There was also issues with the DEF system and there were numerous recalls with that too.
If all of the recalls/fixes have been carried out on this truck you might be okay, but remember... it's a twin clutch system and it does not have a low range. That may not be an issue for you, but it could affect where you can comfortably take the truck. If the plan is to mainly go on the highway and forestry type trails, then you would probably be perfectly fine, but if the intent is to tackle more difficult terrain then a lack of low range could potentially prove problematic.
I should note, I do not own one of these trucks so my comments are not from first hand experience. I own the previous model, with a manual gearbox, low range and a 4.9L engine, which is a very different truck configuration.
Some people do like the 3.0L model, but from what I have seen, more don't.
You need to do your research and make your decision based on your own findings and what your intended usage might be.
Personally, if I were in the market for a truck today, I doubt I would consider a FGB71/FGB72, but each to their own.