First we need to know what is important to you.
Do you overclock?
Do you often work inside the box?
Do you want to show off what is in the box?
Is a quiet box high on your priority list?
Will the box be somewhere it is not often seen or heard?
There is no one right box for everyone. First you need to set your priorities, then ask for suggestions to fit those requirements.
Me? I wanted quiet and understated attractiveness. I am quite happy with the Antec Sonata that I chose, but many people would not like it since it has no window and is far from state of the art when it comes to cooling. I guess it could be called more of a P4 than an AMD box.