not sure if it was grain or grass fed, but probably a little of both....
the biggest thing in the taste is the way the cow was put down...the guy shot him poorly and the cow staggered around for several minutes...apparently when an animal doesn't go down right away, the cow sends adrenaline into its tissues, giving the beef an off taste....
same goes for hunting. The gamiest tasting deer are from *ss shooters. Quick kills- yummy!