Good light comfortable pack - Gregory Optic 58 Pack

Due to shoulder issues, I need a backpack with a frame. This pack is pretty darn light for a framed pack. I really appreciate the vented frame against my back which provides good ventilation. I am unsure if the water bottle pockets are going to work with the bottle horizontal - with the bottle(s) vertical, they are less than ideally accessible. No issue if using a bladder and hose, which I will do fi the WB pickets don't end up working well. I purchased this pack instead of the Osprey Exos due to lower price and for online reviews saying that this pack is very good at transferring the load to the hips, providing stability and comfort. I have had a several packs in the past, and the Gregory brand has been the most comfortable for me. Four stars not five due to WB pockets not being ideal.