Product review (5 stars): Buy them now!
These things (Stanco 4 Pack Universal Electric Range Non-Stick Black Reflector Bowls)  are one of the best purchases we have made in a long time.  It is so nice to take out the reflector bowls, rinse them with water, quick wipe with a sponge and they are like new.  The notches for the burners don't all line up perfectly but the burners do sit level so no complaints there.  If you are on the fence about buying them, do yourself a favor and get them.