Just today I saw Cabela's is coming out with an expandable pack that has a lot of the features of high-end packs, but at $200 and some change instead of $500-$600; it's not yet in stores or shipping out the warehouse. Will be anxious to see one in-store; might have a hard time talking myself out of ordering one.
https://www.cabelas.com/product/CABE...7.uts?slotId=0