BillConner wrote on Jul 24^th, 2013 at 12:35am:

Dragonfly aficionado here.  I took the whisperlight for Philmont trip - just add boiling water meals at most - and coffee all the time - an dirt was fine but miss being able to turn it down low and leave on till cleanup.

BC, A guide used a whisperlite to simmer very well. He had a small grill setup that would hold 2 WL (2 burner coleman suitcase stove style). It raised the pots up some, plus he barely pumped the gas canister when he wanted a simmer. You had to keep an eye on it to see that it didn't go out.
He hated how loud the Dragonfly was. But I don't mind it and think it's loud enough I don't need to watch it to know how it's burning.