hello DarshanK, that probably depends on what kind of user you are: https://www.mozilla.org/firefox/channel/

Firefox Nightly alpha 1 and Aurora alpha 2 builds and beta releases are a snapshot of the current development stage of Firefox and meant for testing by experienced users.<br /> If you do not have experience with such test releases then it is better to stay with the latest Firefox release.<br /> Not all website may work properly with Firefox development builds (Nightly, Aurora, Beta), so make sure to always have the current release installed as a fallback in case of issues.<br /> Make sure to create a separate profile folder for each version. See: * http://kb.mozillazine.org/Testing_pre-release_versions