I am curious, what do you not like about the Firefox UI? I honestly could go back to like Firefox 3.5 and still be fine with it. I prefer the UI of the debug tools in Firefox over Chrome as well.
That's an interesting comment considering how Chrome has recently changed its UI to look more like Firefox to the point I often mistake people for running Firefox when they are actually running Chrome.
What about the UI don't you like? I've heard this complaint before, but the two appear pretty similar to me, at least to the point that I never considered one more appealing than the other.
I just opened both browsers and it's pretty hard to really see much of difference in UI. If anything, Chrome's UI is slightly more basic. But the icons, positions of menus, etc are almost identical.