I have listened to a lot of Amon Amarth and they are a good band. If you like them, you will surely like In Flames. In Flames is by far the best band of the genre. Their best song is "Jotun", and is IMO the best death metal song ever! Other good ones are "episode 666" and every single song off the "The Jester Race" I think a lot of people try out In Flames by listening to their newer stuff and get turned away, for good reason. Their newer stuff is really nothing special. However, if you give their earlier stuff a try, i think you will eventually agree with me that they are very talented. If you guys haven't heard of Opeth either, you should try them out. Try the song "Demon of the fall" or "When". They have a different style than Amon Amarth and In Flames, but i really like them, maybe you will too.