Which oven do you use? Watch
You also need to choose between gas and electric ovens. The gas ones are more expensive for buying but cheaper while regular using. These ovens are also perfect for casseroles and roasts because they're less drying than the electric ones. It's also one of main differences for them in cooking.
The electric ones also are divided into conduction and convection ovens. The first ones heat from the bottom up and the second ones have heat circulation with a fan in the back and are designed to make the temperature within the oven more even.
There are also such types as single (more widespread models) and double ovens https://pickadvisor.org/best-double-oven , self-cleaning, roaster, with warming drawer, proof mode and so on.