Are All Chains Created Equal (not about x-ring, o-ring)

Hey guys,
Wondering if someone could shed some light on chain manufacturers, and if any go beyond the ANSI B29.1 standard, (last revised in 1975). The reason i ask this is because chains vary in price between brands, and having only run RK takasago chains myself, i wanted to know of peoples experiences with other chains.
I did a bit of research myself, and under the load conditions etc, its far more likely for a chain failure on a bike to occur at the internal pins (reason being the velocity of the chain makes the pins more susceptible to failure than the plates). So really, if all chains were made to the standard, ie the pin materials were the same, and you kept it well lubricated, whats the advantage of a more expensive chain?
I'd also like to point out i've never had a chain break on me, and i do take a link out before replacing (im only on a 250 tho).
If anyone has had any bad experiences with chains breaking (ie tearing into their crankcase) then post it here. Thanks
Wondering if someone could shed some light on chain manufacturers, and if any go beyond the ANSI B29.1 standard, (last revised in 1975). The reason i ask this is because chains vary in price between brands, and having only run RK takasago chains myself, i wanted to know of peoples experiences with other chains.
I did a bit of research myself, and under the load conditions etc, its far more likely for a chain failure on a bike to occur at the internal pins (reason being the velocity of the chain makes the pins more susceptible to failure than the plates). So really, if all chains were made to the standard, ie the pin materials were the same, and you kept it well lubricated, whats the advantage of a more expensive chain?
I'd also like to point out i've never had a chain break on me, and i do take a link out before replacing (im only on a 250 tho).
If anyone has had any bad experiences with chains breaking (ie tearing into their crankcase) then post it here. Thanks