Just curious how did you come up with the list of those five bikes? For the riding you describe I wouldn't go with any of the ones listed.
As far as wanting to know how those bikes lasted for people that wouldn't really be all that beneficial either since the people that own those bikes probably use them for different purposes than you will. It's pretty safe to say that if someone used a freeride type bike for light trail riding it would last forever, it just would not be very efficient. Then if someone used a xc race bike for freeriding it won't last long.
As an example an Intense M3 is a much better bike than a hardrock, however it's worthless for light trails and street riding. You need to chose a bike that fits your riding style.
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I may be fat but I'm slow enough to make up for it.