I currently use a Sennheiser HD 380 Pro and want something more/better/different. All my listening will be done on my computer so closed or open doesn't really matter. I will be mainly listening to Power Metal, Pop, Heavy Metal, and some Rap. I think the best sound that I've ever heard out of personal preference was out of my Etymotic HF5's so I'm assuming that I enjoy a flat response and clarity on the high end, so I'd like a full sized headphone that's similar but an upgrade in sound quality from my HD 380 Pro.
I have researched and it seems some people recommend Grado's but that doesn't seem right because I'm not a basshead which some of their headphones seem to have afaik. If anyone can help me in making my decision it would be greatly appreciated as I don't know what the next step up is. I'd like to preferably spend less than $400. Thanks.