How to choose Convection Toaster Oven?

The convection ovens provide a high speed fan to circulate hot air around the surface of the food

This reduces the cooking temperature by 25% over the conventional ovens

Toaster ovens have come along way in the last two decades by incorporating the Convection heating system. 

Usage

Tandoori cooking in a convection oven is better than that in conventional ovens. Similarly, convection ovens are good to bake Pizza.

The food cooked must be flatter like a Naan or a Pizza, and not very high.  You can cook a Tandoori Chooza (Squab chicken), but not a Large Turkey.

It browns toasts evenly on both sides. You can make hot sandwiches.

You can use Broil function to make Tandoori Roti, grilled cheese sandwiches.

Features

Power Temperature

The ovens range from 1,200 watts to 1,500 watts. One should actually look at the temperature. Can the internal temperature reach about 500º F?, if so you can do your Tandoori cooking very efficiently

Capacity

The capacity is normally specified in terms of cubic feet. I would assess the size by three criteria:

Can I bake a 12" pizza, this give the basic foot print. This will also allow you to toast 6 slices of bread.

Can I bake a 5 pound Tandoori Whole Chicken, this will give me the height.

Broiler

This is not available on many of the convection ovens. You really need this feature.

Automatic shut off

Many of the oven remain on, though the cooking time has elapsed. You need a safety feature that the oven will actually shut off at some time.

Slide out crumb tray

Interior

Interior must be non-stick or porcelain.