Buying New What would you buy and why

Thx for the replies
To answer a couple of your questions
We still only need Euro5 in Australia but can also get Euro6 if you want it. Merc choose to sell only Euro 6.
For example Scania charge $4000 more for Euro 6, it will use half the Ad Blue. Think I’d go Euro 5 though.
I have a couple of Volvos, 3 yrs old. They have been OK, not great.
The Volvos stand up pretty good in Australian conditions, they actually build them here.
Scania, Volvo, Kenworth all have wait times out until May. Merc have plenty of stock.
The Merc has the cheapest service plan, about half of what the others charge.
Thing is Merc don’t do any preventive stuff, only replace stuff when it breaks.
I do 200000Kms per year, all highway work. I’m no Outback Trucker!
I’m not in a rush to get it. At the moment I am leaning towards the Scania.