Mistheria is surprisingly good, the keyboards are excellent, I can't remember his name but he reminds me of Andre Andersen of Royal Hunt.
Sabaton are cool, I was going to write a thread for them one of these days, they specialize in songs about battles from the past.
Excalion I have only played twice, so I can't offer much background on them yet.
Ross The Boss is from LOU's recommendation, the lead guitarist from Manowar, plain hard driving heavy metal.