Choosing a kiln becomes simpler when you narrow the search with these factors:
1) The size of the electric circuit in your studio. Your kiln choice will be limited by the number of amps available.
2) The size of the kiln. Estimate how much firing chamber space you need.
3) Front loading or top loading.
4) Firing temperature.
Narrow the kiln selection search with those four factors, and make a list of models that you are considering. Then compare those kilns in greater detail. Try out the competing controllers using online interactive demos. That is like driving a car before you buy it.