...and have a base of 11/12 lbs. I test carried 25 lbs for two hours on local trails the other night and am pleased so far. I had to reposition/tighten the belt once, but it stayed fine after that.
Making my decision easier is that the large is actually 49 liters and the pack has numerous storage extras not included in the base 49 (belt pockets, side pockets, main outside storage pocket, and removable lid (that has pockets).
I picked this up as a summer pack after trying the Ohm, which is a great pack. However, for hot hikes I wanted the dry/cool back like I get from my Deuter Futura Pro. The Exos seems to have advantages over the Deuter with the load closer to back for better balance and uniform internal storage dimensions making loading easier.
edit: I'd agree about the side pockets, not so good for water bottles. They hold my 1 liter platy's just fine, but getting them back in while wearing the pack is going to take some practice.