I need some advice for a new pack. I currently use an Osprey EXOS 48. It's a little tight for 3 season hiking and the waist belt just does not seem to carry the load. Load weight averages 22 pounds. This was my first pack and it felt ok in the store but I need more capacity and better load carrying. I have rented an Osprey Areil and it carried wonderfully. My ultimate goal is to be between light and ultralight. I like what I read about ULA circuit and maybe the catalyst if I carry the Exos for warm weather. I mainly day hike and section hike but preparing for a thru hike someday. Any advice would be much appreciated.