You think Max's interface is good???????
It's full of a decade of clutter and was kinda clunky back then! Of all the things to praise Max for, UI is certainly not one of them.
I couldn't disagree more. While it might be a bit cluttered I find everything is fairly easy to find and everything is where it would make sense.
I've had to switch to Maya for a project and it just felt like everything was the opposite of what I would expect it to be. Now maybe that's because I'm used to Max but it seemed like if you didn't know the keyboard shortcut for something in Maya you were hooped.