Safari 3 passes Acid 3 test. Despite of Opera "won" it faster getting all bits of the test, still it is available only in 9.0 version and still performs more poorly than Safari WebKit. Here I updated the engine of the browser. That's pretty it on a screenshot, nothing else to add:
Safari rulez! :-P
The real life still is quite different: MSIE still keeps huge market-share and it still can squeeze only ~17% of the test. Firefox still quite far from the ideal status too. So let's forget about really good AJAX applications and back to the reality... or... Java WebStart?..