You definitely won't be sorry, Cal.
Although nothing is indestructible when you're loaded up and crossing places like the Simpson.
Something I've never mentioned here before but I broke two of Ultimates main leafs! One on each side of vehicle and on the same trip about a month apart. Not a show stopper but it certainly makes travelling slow going.
Apparently I'm the first to break their mains.. was a combination of a heavy rear axle (1880kgs) and over 12 months of continuous outback travelling. The cause was put down to the super pro bushes wearing out and binding up the springs. Since that happened I made it part of my maintenance to replace those bushes every 6months! Probably no so much of an issue if you're under the maximum rear axle weight though.
Worth mentioning that Ultimate went above and beyond to ship brand new main springs to me free of charge! Had them on the sat phone and they organise to ship them to the nearest town to me... Took me about 3 days to crawl 1100km with blocks of wood jammed under my shackles.