Yes, this is a heavy pack; however, for those not interested in going ultralight, the Anti-Gravity system more than makes up for the extra heft.  My base weight with this pack is just over 16 lbs, and fully loaded with consumables it is still super comfortable for all-day carry.  This has to be one of the most popular pack seen on the AT, which is what got me looking at it in the first place.  The clinchers for me though were the AG system and the amazing forever warranty.