I was under the impression that early carbon frame problems had to do with the lugs, not the actual frames.

OP, if you're not trolling, carbon fiber frames are extremely strong. they will outlast you and can easily outlast you. they make cars and planes out of it. yes, they snap instead of bend. but their point of failure is so far beyond that of steel or alu...have you ever had a steel bike just fall apart on a ride? no? well then don't worry about carbon fiber. yes, there are frames with defects, but steel can have defects too.