@Luca Palanca Falsini i found out that the Toyota dealership rotate guests companies to promote their products, so IronMan being there is not an endorsement from Toyota that they are their chosen/recommended Off-road suspension provider (don't believe their sales person if they said that).
I found this out when i purchased my car, ARB had a stand/corner of the dealership advertising their suspension in Jan/Feb.
I have no personal experience with IronMan HOWEVER please do not take their presence in the showroom as a sign of their recognition as main/recommended provider. Also the staff are separate, so the Ironman Sales team are completely different than Toyota.
You will be spoilt for choice (1st world problem) as your car shares the same frame and suspension as the Hilux. Look into ARB, Dobinsons, TJM, Ironman - likely they will all fall into a similar budget.
Sorry i offer no help - just confuse you more