I purchased the Ninja Digital Oven about 1 month ago. I love the large cook/bake surface.  I was amazed at how fast it preheats. I also like the larger pan sizes I can use in the oven.  A 12 inch pizza fits perfectly in the oven. I like how it is so space saving on the clutter when b it is placed upright.  I think it is well designed and I think it is a useful and space saving tool.