Logans and Heavy Metal?

I am reall interested in a pair of Aerius I's, and I like all kinds of music. From Jazz to Country, Blues to Extermely Heavy Metal. I've heard these speakers with all kinds of music except Heavy Metal. I've read that they are not that great at the hard stuff. Is this really true? Is it a listenable reproduction of the music, or is it so bad that I should avoid them? Most of my Heavy Metal listening is at work or in the car, but there are those days... These speakers will be used as home theater as well. Any comments or other recommendations are greatly appreciated.
FYI the driving amp is an Odyssey Stratos.