Yeah, I have NO doubts about the durability of the 3 speed hubs, considering SRAM, Shimano basically copied Sturmey's 1912 design, but for my intended purposes the added range is enough to lure me away, if something else has the potential to at least hold up for 4 years or so before needing a replacement. Maybe then I'd be able to replace it with a rohloff anyway

I've heard another claim of a spectro 7 over 20,000miles as well.