When I got a Mac, one of the first things I did was download Firefox. I had used it exclusively on Windows since 1.0 so it was natural to keep using it. Along the way, I stumbled onto Webkit, which promised faster speeds. It did seem faster, both rending pages and starting up so I stuck with it. After the hundredth time it crashed, I switched over to Safari, which is based on Webkit. It crashed less but it had a bad habit of slowing down to a crawl. Back to Firefox I went.