Typically between 35 and 45 pounds at a time. It varied with food weight and how much camera/electronic gear I had with me at any given time.

I picked those up from Zpacks. So much better than trying to fiddle with pockets behind your hips... zpacks.com/products/water-bottle-sleeve

There is no Junction 4400

No damage checking in? Do you put it in something to protect it? ✌️

I haven't had any durability issues in either really hot or really cold weather. The sound really isn't an issue once everything is packed tight and secured... but both colors are just as crinkly and loud when they're emptied out for the night.

That's correct. You can roll it down as far as the spot where the shoulder straps are attached. Even rolled down, I've noticed that the 4400 seems to carry a little better than my 3400s. It's a tad wider, and the exterior pockets are bigger. Minor differences, but I can feel them.

I use a 20 degree Enlightened Equipment Revelation quilt in the Long/Wide size. It's plenty for me wrap around completely when it's cold, and having the ability to unzip completely so that I can throw a leg out on warmer nights is a big plus.

I was carrying the Aether 70 AG. Great pack, but super heavy by itself...

I haven't found a problem with how it carries heavier loads without them, but they would be a welcome addition to the pack, just to keep the weight balance a little farther forward while I'm climbing steeper sections. It's a personal preference for most folks.

Here is a video on how to add load lifters to your hyperlite. Looks pretty easy kzfaq.info/get/bejne/qrt-iNCiyK6skX0.html