I bought this product after many years of a PANASONIC combination oven gave up. 
The paint inside my new panasonic started to peel away and rust has taken over even though I clean it regularly.  I don't know whether the food is contaminated or not
 As  it was just out of its guarantee so I contacted Panasonic  to see whether they could help.  
They said they couldn't.  Just over two years Ive had it.
Value for money not likely. My friend paid a lot less for her microwave and she says its still brand new.

BUYER BEWARE