I fitted Dobinsons shocks/springs to the GU few months ago.
Handled the roads out the back of Menindee and Broken Hill without issue. Been round the High Country a couple of times too.
Even the Renmark rd (Considered a Road???) from Wentworth to Renmark (by far the worst road I've even been on) and wasnt bad at all. The shocks got warm, I didnt notice any change in handling or comfort for the 140 odd klms, but it was 35 degrees and I wanted to get to Renmark by dark...
They are no Koni, but they arent Koni price.