Style and appearance 6 Sturdiness of design 7. Heating power and variability Whether you choose a gas or an electric cooktop, there are models that offer superior boiling and simmering capabilities, precise temperature control, and durable, attractive construction. See the cooktop comparison and ratings below with a link to the full review of each. Brittany Rowland researches new developments in Appliances, Kitchen and CE products features with a vigor to which few would aspire but someone has to do it. More Top 10 Lists Features we considered while compiling the top 10 list for combination microwave ovens included convection baking, oven and microwave capacities, adjustable racks, attractive design, size, and, of course, cooking performance. While these units typically run expensive, there are some Wall ovens are becoming an increasingly popular alternative to traditional range units because of their compact size. Most wall ovens are either 24” or 27” wide, and they are powered by either gas or electric.