There are many different types of gutters, and knowing the facts about each one can help you choose the right one for your home. If you want to install new gutters or if you are just looking to replace your existing gutter system, the question is what type is the best? Seamless gutters are the most popular since they require the least maintenance. There are small seams with the seamless gutters, but they join only at inside and outside corners and at downspout outlets. Seamless gutters are available in aluminum, galvanized steel or copper.