they are good boards, i used to have a 6'0'' SB-1... loved it until i snapped it in puerto rico.... i replaced it with an SB-6, which i dont like as much... glassing seems about average, alot better than some other major board companies.
My best friend has a 6'3 sharp eye and the second time he took it out, it was maybe waist high and it snapped, to this day I still don't get how it happened. The shape is ridiculously awesome but I'm not sure about durability.
they're awesome, a lot of my friends have, i personally dont have one but i used one, my 1 friend wont ride another board besides them. look into sb1 or glider , great boards. and from what i know they are durable.