Step up form ES7's?

I'm looking to step up from my ES7's. I absolutely love them and they are great "fun" headphones as I was told over a year ago. I am not really looking to step up because I feel they lack quality and they in no way fail to meet any expectations however, I suppose I am just curious to see if I can find something that amazes me the way the ES7's originally amazed me.

Would the ATH-A700 be a decent step up? I would idealistically like something that is good "all around" I don't care to have "extra bass" or over emphasize any particular part.. I listen to a lot of metal but, I don't try to keep things exclusive by any means.

no comments?

It does some.. I will look around at prices and see what is going on.

I am by no means brand loyal but, there is some intangible qualities to my ES7's that I like..  I am wondering if maybe I should stick with them or hop ship ya know?

I'm also hoping to keep in a relatively low budget x.x so avoiding buying an amp would be nice.

I would ideally like to keep it in the 100$ range.

I'm willing to go over within reason.