I used Firefox for years. Whenever I got a new pc or had to clean my pc the first thing I did was kicking IE off and installed FF. FF has been reliable and fast and hardly till never crashed. I also loved the Philadelphia Flyers themed Browser in FF. But now I got a new pc last February and Firefox kept on crashing. It was not working well with Windows 7 64 bit and it also had the Flash plugin troubles. So I had no choice and kicked it off. I have IE for months now and it works great but I'm not an IE person. I also have SrWare Iron which works perfect for me. I used Safari and Opera on my Mac but Safari reminds me too much of IE. Not bad but sometimes slow. So my personal opinion is Firefox.