Well I like Firefox 3!
I am very happy with this latest version of Firefox. I have used Firefox through every iteration possible; however, I have struggled with the various Betas of Firefox 3 and was even on the verge of going back to Opera. However, Firefox 3 itself is great, finally the Beta bugs seem to have been sorted (for me at least). And as for looks - well I'm sure it won't be long before someone comes up with an attractive theme I can use instead.