Duralite Bakeware is meant to replace glass bakeware.  Quality is good and it is easy to clean.  However, the top is not leakproof.  It can be used in a broiler for a short period of time.  it cannot handle hot and cold quickly (the dish has to stay out for a while).  While similar it statistics to glass, it is lighter, but does not seem as durable.  It is also lightweight.