My brother has a 2010 zesty which has gone through three bb’s so far, as above it seems to hold a lot of water which must be getting into the bb from the seat tube, he stores his upside down now and the third is lasting much better!He has bought one of the Enduro one’s but not needed to fit it yet so cant comment other than it looks and feels good!
On the warranty thing his frame did crack around the bb shell but a new front triangle was supplied within a month by Hotlines.