My wife who bakes 3 or 4 times a week got a new KitchenAid mixer as a present. It came with a beautiful glass bowl which was a larger capacity than the metal bowl. My wife loved it from day one (except that it was way heavier than the metal bowl. Last week while mixing up cake batter the bowl suddenly cracked in 3 or 4 pieces. In trying get the bowl out it proceeded to break beside the original break lines and seemed to almost shatter after the original cracking allowed the pieces to fall to the floor. The bowl was so heavy that we assumed that it was heavy duty along the lines of a pyrex type bowls which take tons of abuse without breaking. I was wondering if there were some flaws with the bowls which have been addressed. My wife has the stainless steel bowl but misses her glass bowl.