For the past 5 years or so I have been extolling the virtues of all things Tom Bihn to my brother. When he returned from Australia a few years ago he was hauling two bags big enough to stow bodies, one for himself and another for his son. His wife had a slightly smaller bag and they each had a carry on as well. Meanwhile i have been going to visit them with my wf or synapse and occasionally (like Christmas) with a small rollaboard.
I must admit, though, that the body hauler was useful to stow snorkel gear for 4 people and various gifts on the way to Cuba this February. When we returned from that trip he sat down and ordered a tristar - black dyneema/wasabi and various other bits. Bwahaha, the fun begins!