After trying Safari 4 on another machine yesterday, I got brave enough to install it on my main system today. I still don’t care for the tab bar at the top of the window, so I used these patches to restore the old style tab bar and the blue progress bar.
I find that Safari 4 is a lot faster than either Safari 3.x or Firefox 3. It also uses a lot less CPU than any of the other browsers. So far I haven’t seen any crashes or incompatibilities. New versions of SAFT and 1Password were released today, so I have all of the functionality I’m accustomed to.