Early reports look great.
But still no 30fps progressive video. No matter which browser is ultimately better you still need both because inevitably there will be sites that will only work on one or the other, and I can't see this ever changing in the near future, Microsoft monopoly or not. A long time ago my favorite browser was Netscape Navigator 3.0, after that the franchise went south. Later versions of Netscape took forever to load and were very buggy. Why new versions performed worse is hard to pinpoint.