Is a brilliant browser, that is more secure than Internet Explorer, has better facilities, and many people once they have found their way around it, would not go back to IE - me included.
Download it and try. It will run perfectly along side IE, so there is no need to worry about deleting IE or anything like that. The only thing I now use IE for is Windows Updates, as they are tied to IE and you have no choice.
click here for the download.