Take the test here:
http://acid3.acidtests.org/
I got 77/100 on Safari Version 3.1 (5525.13) and 54/100 on Firefox 2.0.0.13
"WebKit", the underlying engine for Safari, is the only downloadable browser that gets a 100/100 but Opera has a version that gets 100/100 that can't yet be publicly downloaded.
I've heard the new Safari runs much better in Windows/Vista than previously, but have no experience with it . . .
Story here:
http://www.tuaw.com/2008/03/27/webki...-100-on-acid3/
***My initial thread did something weird - some code in the quote fracked up that thread!***