Huss
Member
.. The F4 is just bafugly and I wouldn't be caught dead using one. ..
HOW
DARE
YOU!

I love the F4 so much I have two. Genius of the design is the beee-yooo-tiful dials, and the fact that you can have the camera relatively small with the compact battery pack (the way I like it), or huge if you want to carry 8 batteries with it.
The F5 only has the huge option.
It's also why the F6 is so superior - you also can have it compact or big n fat. Which is why I have the F4 and the F6 - I like to decide for myself how I want my camera set up for my shooting needs.