I hope this isn’t hijacking the thread here, but I think it’s a valid topic since this branch of the conversation seems to have moved toward storage.
Long term storage is an issue with any insulation material. You can store it compressed for short periods, but compressed for long periods the fill "learns" to stay compressed. As the insulation loses loft, you lose heat retention.
When possible, store your sleeping bags, insulating layers and even self inflating pads uncompressed. Your gear will last much, much longer and it will have the loft you expect when you need it. It’s a horrible pain, but I store my down jacket, sleeping bags, and pads flat in my attic next to my BOB. I have to compress everything when the time comes. To me, it’s worth the longevity and performance I demand. I realize some don’t have the space for this, but do what you can and your gear will hold up it’s end of the bargain. If you’re concerned with the time it takes to compress and pack all that gear, opting for a more “grab-n-go” BOB, maybe consider a shell jacket and a more durable insulation material like a wool sweater. Layering is always key anyway!
Good luck.
m