Lowlight: No Google Toolbar yet. I miss autofill.
Lowlight: Ctrl-K (Windows) takes me to google.com for search, rather than to the Google Toolbar search bar (no Google toolbar yet). Ctrl-K is thus side-effecting, which is a real pain if you hit it accidentally in a tab.
Highlight: AJAX sites are much faster.
Highlight: resizing the display (Ctrl-+) makes both text and images bigger. Page layouts remain about correct now whereas before you'd get the same 200px wide body text column even with 36pt body text.