So, I've used this for some training hikes and a couple of overnight trips for about a year and now planning on using it for Mt. Rainier. Not sure what the deal is with this pack but the hip belt rides really low with any appreciable amount of weight in it. It's barely tolerable with approx 40lbs but anything over that is uncomfortable. I originally got the M/L and had to exchange for the S/M. It may be the design of this pack but it seems odd that it wouldn't carry more weight comfortably and that it would sag so low, right over where a climbing harness would be. Every time I have used this pack with 30+lbs, it has been to warm to wear any type of insulation layer, which might help, but I just don't see why it feels like a 10 year old hanging off my back when it is built for mountaineering. Removing the frame sheet and top lid and swapping out the hip belts for a lighter summit pack is a pretty cool design which makes me give it 4 stars, but I'm not sure why it doesn't carry a heavier load better. After all, mountaineering packs get heavy! Maybe I'll have to rethink my packing configuration (which makes no sense). Anyone else have this issue? Solutions and/or suggestions welcome. Oh, and B-T-Dub's, I got this direct from Mountain Hardwear and is in no way Backcountry's fault.