What about native-style widgets? Are they finally fixed? That's been my gripe with firefox since day 1, and the only thing still holding me back to Sarafi.
Although buttons look native-ish, dropdowns (from the <select> element) still look hideous. Check out the following bugs:
In my experience, Safari 4 has been noticeably faster than FF3.5 RC1. I could understand wanting the extensions and such, but if speed made that much of a difference in your decision, I just can't fathom how Firefox on OS X could be preferred.