Metal Bands Like Killswitch Engage?

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I just discovered this band tonight and they are so amazing. I have been listening to the Arms of Sorrow over and over again. This band is addicting. So I was wondering if there are any other bands just as good as them. OR if there are any songs just like Arms of Sorrow. Or if there are any talented metal vocalist that are good as Howard. If so let me know! I LIKE ROCK NOW!