Nautilus owners upgrade to what?

Hello all, just wondering anyone who has owned B&W Nautilus and sold them for something else that they liked better. I see people here selling their B&W so there must be something they are trading upt to. Every dealer who sells B&W invariably points me to B&W. These dealers also sell: Thiel, ProAc, Monitor Audio, Paradigm, NHT, Wharfdale, DynAudio.
As one B&W dealer told me, once people hear B&W that's what they want to buy. He was saying if B&W started selling at Circuit City, he'd be out of business.