Breville the Compact Smart Oven vs Ninja Flip SP151

The Ninja Flip SP151 is better overall than the Breville the Compact Smart Oven. The Ninja does a better job of toasting and air frying while still delivering a similarly strong baking performance, making it the more versatile option if you want one appliance to handle several different cooking tasks. Its flip-up design is also useful in smaller kitchens since you can reclaim some counter space when you aren't using it. The Breville, though, is much easier to clean and also has excellent temperature stability, so it's a particularly strong choice for baking and reheating. If you value simple operation, easy maintenance, and predictable oven performance over stronger air frying and toasting, the Breville is the better fit.