The lid is one of the most important things in a rice cooker. Basic products come with metallic lids. They cover everything and can actually conduct a pretty good job. However, you might want to take a peek inside sometimes. This is why most chefs recommend clear plastic or glass lids. A glass lid should be your main priority. Keep in mind that these things should not cost a fortune. If you can choose between glass and other materials, get the glass if it does not skyrocket the price. Otherwise, you should look elsewhere. Visit www.ricecookersportal.org and check out a few reviews too.