I agree that the two Kifaru are both externals, but I think your referring to a traditional framed external. If you are the Barney's Freighter frame is hands down the best of the best in traditional frames. There are a couple bag options and it can also be run with other companies bags and a few custom made straps.
Another really good external frame is a Dana Design/K2 (Longbed, ShortBed, Terraplane, T1, etc.) They are not made any more but still show up on eBay and other sites.
Finding them is very difficult and paying big bucks for 15 year old packs is hard to deal with.
I bought two brand new dd packs at a yard sale tags still on em with another waist belt inside one of them for 40$ I sold the packs separately on eBay. The bigger one went for 250$ the littler went for 180$ and the waist belt went for 40$! Yes, big money for old packs. Cha ching.