Air Frying and Crispiness
All three crisp well, but the Pro gave us the most even browning once we loaded food toward the front. The standard Wonder Oven crisps wings in a smaller batch, and the Large crisps vegetables well. None replaces a basket-style fryer for a big batch of fries in one layer, since the ovens work with air moving through a cavity rather than a drawer.
Steam Infusion and Reheating
Steam infusion means adding one to two teaspoons of water to the reservoir so the oven releases steam while it cooks. It helped keep the chicken juicy, and it makes reheated leftovers taste closer to fresh. Cold pizza revives well, which is the best reason to own one for leftovers.
Baking, Roasting, Toasting and Broiling
The Pro's toast performance is the best of the three because you can set a precise time. Broiled salmon came out moist, and roasting is a strength on every model. Baking cookies is fine, though they turn out different from a full-size oven.
Preheat Speed and Temperature Accuracy
The Pro preheats in about five minutes or less. The standard Wonder Oven has no preheat beep, no indicator light and no real-time readout, so you guess when it is ready. Some units run hot or fail to hold accurate temperature, so an inexpensive oven thermometer is worth having on any model.
Analog vs Digital Controls
The knobs feel solid and there is little to break, though the timers on the two analog models are the trade-off covered in their reviews. The Pro's touchscreen gives you exact settings and silent mode, and it is the only model where we would not need a separate timer.