In reply to LesleyS:
I have both the MSR PRD and the Soto WM with the Triflex arms.
To be honest, there’s not much to choose between them. The PRD is perhaps slightly less fiddly, but loses points for its curved arms which don’t easily fit the slots on the Fire Maple pots.
My current stove system of choice is the PRD with the pot from a Jetboil Stash. Unbelievably fast and efficient. Boiled enough water for an Aeropress of coffee in just over a minute in a howling gale in Torridon.
The only advantage of the triflex arms on the Soto WM is that they “slot” into the gaps on the Fire Maple G3 Petrel, but this wouldn’t be a game changer for me.