You should feel free to download whichever one you are currently not using and take it for a test-drive. Charging a fee is virtually unheard of. Usually the answer is in the form of leaner, sleeker alternatives, such as the lightweight Opera browser from Opera Software, or the Enigma browser from Sutton Designs. Often the other most outstanding feature is speed. These alternatives are usually fast.
Opera is said to be the fastest browser in the world.
They also offer an alternate means of showing additional windows and navigating around their screens with or without a mouse. For those who are into personalisation the NeoPlanet browser is very stylish looking. With over 500 stylish skins the NeoPlanet can look, feel, and sound the way you want it to. You may decide that you want to add Plugins to your browser. These are necessary if you wish to hear sounds and see some advanced animations and videos.