Good Points:

1. The browser is very fast.

2. Automatically knows to prompt for proxy for external addresses
and Windows passwords for internal addresses where the proxy needs
bypassed.

3. Bonjour is somewhat cool. Read about it here .

4. Seems very stable.

Bad points:

1. Not Open source.

2. All passwords are sent in clear text!

3. No cool extensions or themes. You get what Apple gives you and it isn't much.

4. The window frame is exactly like it is on OS X. The window can only be
resized by pulling the bottom right corner of the window. I do not
understand how Apple finds this convenient and I find the window
management on OS X to be the worst so why bring it to Windows?

5. No manual proxy bypass for local addresses! You must rely on the software to make the decision.

6. Six, too new so security could be a concern.  

7. Although it is fast, it's not that much of a speed up from Opera, Kong, or Seamonkey to
make me that excited.

8. No Linux version.
 
All and all I was very unimpressed. The speed was the only good thing really.
I'll stick with Firefox, Opera , or Seamonkey . Oh, and if you want to dump iTunes
for something better get a copy of Songbird , the Firefox of iTunes!