Today, Apple just release Safari 4 beta. The interface is much similar its sister Chrome. The top site view is impressed.
The only interface issue is "New tab (+)" is too close the minimized icon.
Try Acid test 3, score 100. Firefox 3.1 beta 2 is 93. IE 8 rc1 is 20. Looks like Apple put a lot of resource on it.
Got to try grammar test later.