Mess Kit Boil Time Comparison. Swedish Army M40 vs. Pathfinder PFM40 vs. Trangia 25 Duossal. 

I have used the Swedish M40 the most, I use the Trangia 25 next. The Pathfinder I have used about 5 times.
Can you see the coloration on the PFM40 has a salmon tinge?
I suppose that the Pathfinder burner won't corrode as much as the brass burners, but time will tell. itndoesn't seem as efficient.