Most of the BMB issues look like they are from 2015 or older. Many of the broken glass carboys are regular small neck carboys, and were dropped. Apparently some were temp changes too fast.
I'm also considering the Kegco 7 gallon wide mouth. The beverage factory site states "These carboys are made of glass and should be handled with extreme care. We have been able to use both hot and cold liquids in them, but they are not impervious to thermal shock and can shatter when exposed to large, sudden changes in temperature. Use caution."
I'm currently using the small neck carboys and when cleaning after keeping in cooler temperatures I use room temp, followed by warmer temp and then hot at the end with PBW or similar to keep from thermal shock. My concern with the Kegco product wouldn't be the glass, but instead the durability of the seal on the lid. Since this thread is a year old now, I'm hoping someone may have some feedback on this. While the dream is to one day have a stainless conical, that boat hasn't come in yet.