1. where do you want to put it? on the counter, or somewhere else?
2. Person count on your household: 1-2, 3-5, 5 or more?
3. the Electricity: Microwave consume electricity, larger microwave tends to consume more.
1. Pre-Programmed Setting: these days, Microwave oven tends to have pre-programmed
2. Child Lock, make sure the Microwave has this one if you have children in the house.
3. Sensors: some microwave ovens can be considered as smart since it can calculate the time needed to defrost (by using the sensor). However, this feature usually comes with bigger price
4. Brand: brand do matters, for me, I like Sharp because it works and it last (in my personal experience it last more than the median Microwave Oven’s age of 8 years)
5. The Type: Over the counter, Over the range, or Built-In, the latter cost more and harder to install than the former, but they have their own pros and cons.
6. The Size: the measure of microwave ovens is on cubic feet (read :Cu.Ft), anything less than 1 Cubic Feet can be considered small, anything between 1 Cubic Feet to 1.4 Cubic Feet can be considered medium, and those more than 1.8 Cubic Feet can be considered a Large Microwave Oven.
6. The Budget: most over the counter microwave oven will cost you between $60 to $200, most Over the Range Microwave will cost you between $150 to $300, and most built-In Microwave oven will cost you about $500 to over $1000
They write in details about the products in this post, pay a visit to have better insight on choosing the right microwave oven.