A response to the thread .. not the comment."Am mature enough to not worry about any Brokeback Mountain jokes."
Oh come on now, maturity has nothing to do with it. Making jokes about people who end up in situations like that is just plain fun....
Frankly, I have bags of treated and untreated. Untreated all the way. EE was right to get away from it.
In WM bags .. the MicroFiber is money. Its great and is very waterproof. All of us, used them last year on hunts in northern Alaska .. and frankly it sort of dries you out at night. It is wonderful.
Jackets, I actually prefer synthetic unless it is for almost a pure sitting jacket / Belay jacket etc because in a jacket I am likely to be partially active and have less control over climate .. and also synthetic is lower profile which I find desirable.
However, regarding bags .. I'd say buy a Microfiber WM bag in desired range , like one of Badger / Kodiak / Antelope / Sequoia and move on. Dont overthink it