Very good! At 28L capacity it's a lot bigger than the one it replaced but it means I no longer have to struggle to fit in a large Pyrex, as in making sure the handles would'n't touch the sides/back/door when rotating. 1000w is a lot but with one push of a button, the power settings can be set at 85% (850w ) which is the level most microwave instructions show. I've got various other Samsung products and can't find fault with any of them