Thanks for the info ! - I'll probably keep searching for a cheap pressure cooker and go that route in the future.
As much as I like the idea of temp control in my cooler, I really don't want to add more equipmet - like to keep it K.I.S.S.
I've been wondering if anyone has tried using a wallpaper steamer like the WAGNER 705 to heat their mash in a cooler for stem mashes?
They are under $50, and can operate for over an hour at 1500 watts.