definately, all the spyware is aimed at IE. I haven't had to use any Spyware/Adaware remover tools since I changed over. Also looks a lot better as you can skin it. You can also "Tab" browse, where you can have multiple sites open in the same session, and flick through the tabs to view them.
There are also loads of addons to it as well, such as FTP clients, download clients etc.
Go to the link above and have a look on their site, you won't regret it